What motivated european nations to finance voyages of exploration in the fifteenth and sixteenth centuries?
a. a desire to spread democracy
b. a a desire for riches knowledge and power
c. the need for additional land
d. christian church doctrine

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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c. the king has significantly abused the colonists' rights many times over a long period of time.