The Three Classical-Era Trade Networks — Silk Road, Indian Ocean, Trans-Saharan — and the FIRST Afro-Eurasian World-System per Frank / Abu-Lughod / Beaujard

Recite Three Promises. Cold Call: Name 3 things that traveled along the Silk Road (eastward AND westward). (Silk + Chinese paper + Buddhism westward; horses + glass + Roman gold + Christianity later eastward.)

• Recite Three Promises
• Display MG-4 Three Trade Networks Map

THE THREE CLASSICAL-ERA TRADE NETWORKS together constituted the FIRST documented Afro-Eurasian world-system. NETWORK 1: SILK ROAD OVERLAND (carried forward from Lesson 15). Origin c. 130 BCE with Zhang Qian's expeditions for Wu of Han. Route: Chang'an → Dunhuang → Tarim Basin oasis cities → Samarkand → Bukhara → Merv → Ctesiphon (Sasanian) → Antioch / Constantinople. Goods: silk westward; glass + horses + religions Buddhism eastward + later Christianity eastward + Indian numerals westward via Sasanian; the network is BIDIRECTIONAL. NETWORK 2: INDIAN OCEAN MARITIME. Origin much older (Indus Valley-Mesopotamia trade documented from 3rd millennium BCE) but classical-era peak from ~50 BCE - 500 CE. Route: monsoon-driven seasonal trade between East African coast (Aksumite Adulis), South Arabia, South India (Muziris on Malabar coast — modern Pattanam excavations have produced Roman gold coins + amphorae + glass), Sri Lanka, Southeast Asia (Funan), Han China via Strait of Malacca. PRIMARY SOURCE: the Periplus of the Erythraean Sea c. 50 CE — a Greek mariner's handbook to the Indian Ocean trade — documents Roman trade with Muziris (Malabar coast, India), with Aksumite Adulis (Red Sea), with East African ports as far south as modern Tanzania. Roman writers including Pliny the Elder (1st century CE) complained of the SILVER DRAIN — Rome paid for Indian pepper + spices + cotton in silver, leading to a sustained trade-deficit. Modern archaeological evidence: Pattanam excavations in Kerala have produced Roman amphorae + Roman gold + Roman glass — direct material evidence of Roman-Indian trade. Roman coin-hoards have been found across South India dating from 1st-3rd century CE. NETWORK 3: TRANS-SAHARAN CARAVAN. Origin: camel-domestication c. 300 CE per Bulliet 1975 enabled regular Sahara-crossing trade; pre-camel-era trade was much more limited (Berber-organized donkey-and-foot caravans, smaller scale). Classical-era trans-Saharan trade: salt + bronze + ceramics + textiles southbound from Mediterranean North Africa (Carthage, then post-146-BCE Roman Africa Proconsularis, then post-439-CE Vandal Africa, then post-533-CE Byzantine reconquest); gold + ivory + slaves northbound from sub-Saharan West Africa (early Ghana / Wagadou region by 300-700 CE). MG-9 Humanity-FIRST applied to the trans-Saharan slave-trade element — slavery in trans-Saharan classical-era was substantially smaller-scale than later medieval trans-Saharan slave-trade and vastly smaller than 16th-19th century Atlantic slave-trade; nonetheless trans-Saharan slave-trade is honestly named (per Lovejoy 2011). THE WORLD-SYSTEM CLAIM (Frank 1998, Abu-Lughod 1989, Beaujard 2019): the three networks together integrated Afro-Eurasia into a single trade-and-cultural-exchange system from approximately 100 CE onward — long before any European 'Age of Exploration.' Evidence: (a) Roman gold-coin hoards in South India + Han China contemporary; (b) Buddhist diffusion from India along Silk Road to Han China by 1st-2nd century CE; (c) Justinianic Plague 541-549 CE entered Mediterranean via Egyptian port of Pelusium from Indian Ocean trade-network — demonstrating biological connection; (d) Aksumite gold + ivory in Mediterranean markets; (e) Chinese silk in Roman Egyptian funerary cloth at Antinoöpolis archaeological site. THE WORLD-SYSTEM CLAIM REFUTES the framing that classical civilizations were isolated.

• Notice: a Roman writer's complaint is corroborated by 1,900-year-later archaeological evidence. The world-system claim has material evidence.

  model Pliny complained in Natural History (1st century CE) that Rome was sending enormous quantities of silver to India to pay for Indian luxury goods (pepper especially, also spices + silks + gemstones) without receiving comparable Indian imports of equivalent value — leading to a sustained Roman trade-deficit and silver-bullion outflow. Modern numismatic + archaeological evidence corroborates this — Roman gold-coin and silver-coin hoards in South India number in the tens of thousands of coins, confirming the bullion outflow.

  prompt What does Pliny the Elder mean by the 'silver drain to India'?
• Notice: trade networks transmit goods AND ideas AND religions AND pathogens. The same network that brought Indian pepper to Rome brought Yersinia pestis.

  model The plague's entry to the Mediterranean via Pelusium (Egyptian Red Sea port) from the Indian Ocean trade network c. 541 CE demonstrates that Afro-Eurasia was BIOLOGICALLY CONNECTED across continental scale by 6th century CE. A pandemic could travel from East Africa or India through Egyptian ports to Constantinople to Western Mediterranean — within months. This is world-system integration of consequential scale.

  prompt What did the Justinianic Plague's transmission route through the Indian Ocean trade network tell us about world-system integration?

• Cold Call: Name the three classical-era trade networks + one good traded on each.
• Cold Call: What is the Periplus of the Erythraean Sea?
• Cold Call: How does the world-system claim refute 'isolated civilizations' framing?

MG-7 6-Question Source Card applied to ONE student-chosen primary source: Periplus of the Erythraean Sea OR Pliny the Elder Natural History OR Sima Qian biography of Zhang Qian OR Aksumite coin material analysis.

M-6-S-ECO-20-A Map

MG-4 24x18 inch trade-network map of Afro-Eurasia at maximum classical-era interconnection c. 100-600 CE: (1) SILK ROAD overland — Chang'an → Dunhuang → Tarim Basin → Samarkand → Bukhara → Merv → Ctesiphon → Antioch (route shown as orange-dashed line); (2) INDIAN OCEAN maritime — monsoon-driven trade between East African coast (Aksumite Adulis), South Arabia, South India (Muziris), Sri Lanka, Southeast Asia (Funan), Han China via Strait of Malacca (route shown as blue-dashed line); Periplus of the Erythraean Sea c. 50 CE noted in legend; (3) TRANS-SAHARAN — caravans across the Sahara linking Mediterranean North Africa with sub-Saharan West Africa (route shown as gold-dashed line); camel domestication note (camels enabled trans-Saharan trade by ~300 CE per Bulliet); trade goods labeled per route. Style: clean educational atlas with route lines color-coded by network; modern country outlines in faint gray. Caption: 'The FIRST documented Afro-Eurasian world-system — operational by 100 CE, well before any European Age of Exploration.'

MG-4 Map

24x18 inch trade-network map of Afro-Eurasia showing three trade networks at the period of maximum interconnection ~100-600 CE: (1) SILK ROAD overland — from Chang'an (Han capital) through Dunhuang and the Tarim Basin through Central Asian oasis cities (Samarkand, Bukhara, Merv) to Ctesiphon (Sasanian capital) and onward to Antioch, with a southern branch via the Karakoram to Gupta India and a northern steppe route shown in dashed line. Trade goods labeled: silk westward / glass + horses + religions (Buddhism eastward, later Christianity eastward) bidirectional. (2) INDIAN OCEAN maritime — monsoon-driven seasonal trade between East African coast (Aksumite Adulis), South Arabia (Muziris), South India (Muziris on Malabar coast, Pattanam excavations), Sri Lanka, Southeast Asia (Funan), and Han China (via Strait of Malacca to Guangzhou); Roman trade with India documented via Periplus of the Erythraean Sea c. 50 CE noted in legend; trade goods: spices + pepper + cotton + ivory + pearls + Roman gold coins (Roman coin hoards found in South India). (3) TRANS-SAHARAN trade — caravans across the Sahara linking Mediterranean North Africa (Carthage, Alexandria) with sub-Saharan West Africa (early Ghana / Wagadou region — proto-state by 300 CE, full kingdom by 700 CE per Connah); trade goods: salt southbound / gold northbound; camel domestication note (camels enabled trans-Saharan trade by ~300 CE per Bulliet). Style: clean educational atlas with route lines color-coded by network; modern country outlines in faint gray.

• Apply MG-4 Three Trade Networks Map — trace the route of (a) Indian pepper from Muziris to Rome, (b) Buddhism from Mauryan India to Han China, (c) Aksumite gold to Mediterranean markets, (d) Chinese silk to Roman Egyptian funerary cloth.

  scaffold MG-4 displayed; pair-work option
• Write one sentence on the world-system claim: 'Three trade networks together integrated Afro-Eurasia into a single system because _____.'

  scaffold Sentence frame; evidence required

M-6-S-ECO-20-B Photograph

Photograph of a Roman amphora fragment from Pattanam excavations (Kerala, India) — currently in the Kerala State Department of Archaeology collection. The fragment shows characteristic Mediterranean Dressel-type amphora form, dated by typology to 1st-3rd century CE; found in archaeological context with Roman gold coins + Roman glass — material evidence of Roman trade with Muziris on the Malabar coast. Caption: 'Pattanam excavations (Kerala, India) — Roman amphora fragment 1st-3rd century CE. Direct material evidence of the Indian Ocean trade network. Modern Indian + Mediterranean communities are living descendants of these trade-network ancestors.' Style: high-resolution archaeological photograph.

• What is the 'silver drain' Pliny complained about?
• How did the Justinianic Plague's transmission route demonstrate world-system integration?

• Show Call — display strong world-system claim sentence
• Preview Lesson 21 (Fall of Rome critically examined + SIMULTANEITY ARGUMENT synthesis)

• Find one contemporary news article (within last 12 months) about contemporary trade flows along a route corresponding to one of the classical-era trade networks (e.g., Mediterranean-Persian-Gulf-Indian-Ocean shipping; trans-Saharan trade; modern silk-road infrastructure investments). Write 2-3 sentences applying SIMULTANEITY — these networks are STILL the geographic backbone of global trade today.