9) Which invention had the BIGGEST impact on Europe's ability to explore the "New World"?
A)
better navigation tools
B)
the church's control of trade
the use of steam engines
D)
centuries of peace

for your : )

after the spaniards introduced horses to plains native americans, the lives of the tribes changed. tribes became less settled and sedentary. the horse allowed them to hunt animals such as bison or buffalo, and, instead of staying in one place, tribes began to be nomadic.

the correct answer is d. about 40% where patriots and the other remaining percentage where neutral