What kinds of information and innovations allowed Prince Henry of Portugal to explore the African coast and expand trade?

cultural/diplomatic relations. most medieval japanese   culture has chinese origins. writing, architecture etc.

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At the center, information about tides and currents was collected, more accurate charts and maps were drawn, techniques for determining longitude were improved, and new ship designs (such as the caravel) were developed.

Explanation:

~At the center, information about tides and currents was collected, more accurate charts and maps were drawn, techniques for determining longitude were improved, and new ship designs (such as the caravel) were developed