Expansion of Trade and Exchanges: c. 600 CE c. 1450
Expansion of Trade and Exchanges: c. 600 CE c. 1450 . AP Concept: ... The magnetic compass (first used by the Song dynasty in China, 960 1279 CE) aided sailors in maritime navigation, making it easier to travel long distances by sea ... After 900 CE, Islam spread to southern Europe, central and southeast Asia, subSaharan and east Africa ...