RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
150 results for "salt trade" — page 2 of 8
F_2_16 — Numismatic Evidence for Ancient Trade: Coins as Contact Proof
Coins — small, durable, precisely dated, and geographically attributable objects — are among the most powerful archaeological evidence for long-distance trade, cultural contact, and economic integration in the ancient wo
F_2_21 — Ancient Pigment and Dye Trade Routes
Pigments and dyes ranked among the most valuable traded commodities in the ancient world — sometimes rivaling precious metals in cost per unit weight. Lapis lazuli traveled over 4,000 km from mines in Badakhshan (Afghani
F_2_14 — Ancient Glass Bead Trade: From Mesopotamia to Sub-Saharan Africa
Glass beads are among the most archaeologically informative objects in the ancient world — small, durable, widely traded, and chemically distinctive — making them exceptional tracers of long-distance exchange networks sp
F_2_10 — Jade Trade Networks — Mesoamerica, China, and New Zealand
Jade — a term covering two distinct minerals, nephrite (calcium-magnesium silicate, $\text{Ca}_2(\text{Mg,Fe})_5\text{Si}_8\text{O}_{22}(\text{OH})_2$) and jadeite (sodium-aluminum silicate, $\text{NaAlSi}_2\text{O}_6$)
F_2_08 — Lapis Lazuli Trade Networks
Lapis lazuli — a deep-blue metamorphic rock composed primarily of lazurite — is one of the oldest traded luxury materials in human history, with its distribution across the ancient world providing direct evidence of long
F_2_22 — Ancient Pigment Trade Routes: Lapis Lazuli, Tyrian Purple & Cinnabar
Pigments were among the most valued trade goods of the ancient world, with some traversing distances exceeding 4,000 km from source to final use. Lapis lazuli from the Sar-i Sang mines in Badakhshan (northeastern Afghani
F_2_18 — Ancient Trade in Aromatics: Frankincense, Myrrh, and Sacred Resins
Frankincense (Boswellia sacra and related species) and myrrh (Commiphora myrrha) — aromatic tree resins harvested from the arid landscapes of southern Arabia (Oman's Dhofar region, Yemen's Hadramawt) and the Horn of Afri
F_2_13 — Copper Trade Networks: Great Lakes to Mediterranean
The Great Lakes copper deposits — particularly the vast deposits of native (naturally pure) copper on the Keweenaw Peninsula and Isle Royale of Michigan's Upper Peninsula — represent one of the world's most remarkable mi
F_4_32 — Obsidian Trade Networks: Volcanic Glass and Long-Distance Exchange
Obsidian — volcanic glass formed when felsic lava cools rapidly — was one of the most important raw materials in human prehistory, prized for its ability to produce the sharpest cutting edges known (fracture to edges of
F_3_10 — Plague and Disease Transmission Along Trade Routes
The same trade routes and migration corridors that connected distant civilizations also served as highways for pandemic disease, making pathogen transmission one of the most consequential — and devastating — forms of "lo
U_3_03 — Ancient Jewelry, Adornment & Shell Bead Trade
Personal adornment is among the oldest archaeological markers of symbolic behavior, with the earliest known ornaments — perforated Nassarius shell beads from Blombos Cave, South Africa, and sites in North Africa and the
W_3_04 — Swahili Coast — Maritime Trade, City-States, and Cultural Exchange
The Swahili Coast — stretching over 2,000 miles from Mogadishu to Mozambique — was home to a network of prosperous maritime city-states that flourished from the 8th through 16th centuries CE, serving as the western ancho
G_2_01 — Network Science and Complex Systems Applied to Ancient Trade
Network science—the mathematical study of complex interconnected systems—has emerged as a powerful tool for understanding ancient trade, cultural transmission, and civilizational collapse. By modeling ancient trade route
F_2_03 — Sub-Saharan African Maritime and Trade Networks
Sub-Saharan Africa was deeply integrated into global trade networks for millennia, challenging Eurocentric narratives that portray the continent as isolated before European colonization. The Indian Ocean dhow trade conne
F_2_04 — Obsidian Trade Networks: Archaeological Tracers of Ancient Exchange
Obsidian — naturally occurring volcanic glass formed when felsic lava cools rapidly — was one of the most valued materials in the prehistoric world. Its conchoidal fracture produces the sharpest edges known (thinner than
F_2_01 — Bronze Age Trade Networks
Bronze Age trade networks provide a documented, testable middle ground between independent invention and lost-civilization contact as explanations for shared cultural motifs across the ancient world. If tin from Cornwall
F_4_10 — Roman Indian Ocean Trade and the Periplus
Rome's Indian Ocean trade network was one of the most extensive commercial systems of the ancient world, linking the Mediterranean to India, Sri Lanka, and Southeast Asia from the 1st century BCE through the 3rd century
W_1_25 — Dilmun: Sacred Land of the Persian Gulf
Dilmun (Sumerian: NI.TUK.KI; also spelled Telmun) was an ancient civilization and trading polity centered on present-day Bahrain, with extensions to Failaka Island (Kuwait), the eastern Arabian coastal region, and possib
W_3_16 — Aksumite Empire
The Aksumite Empire (c. 100–940 CE) was a major trading civilization centered in the northern Ethiopian and Eritrean highlands, with its capital at Aksum. It was one of the four great powers of the ancient world accordin
W_3_23 — Kanem-Bornu Empire
The Kanem-Bornu Empire (c. 700–1893 CE) was one of the longest-lived states in African history, persisting through multiple dynastic phases for over a millennium around the Lake Chad basin. Founded by the Sayfawa dynasty
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