U3 Connections

ISOLATED LOCATION

TRANS-SAHARAN

LACK OF SAILING TECHNOLOGIES

INDIAN OCEAN

SPREAD OF LANGUAGES

UNNAVIGABLE RIVERS

SPANISH IN AMERICAS

SILK ROAD

NEW TECHNOLOGIES

LOW INDIGENOUS POPULATIONS

DIFFUSION OF ISLAM

WEALTH OPPORTUNITIES

COLUMBIAN EXCHANGE

CATHOLICISM IN CENTRAL/SOUTH AMERICA

SWAHILI

DESERT