Why were early people in North America able to build complex cultures?
a. They had learned how to farm.
b. They had learned how to start fires.
C. They had advanced weapons.
d. They had a written language.

A. They had learned how to farm

Explanation:

I hope it good for you

he was able to speed up production of the processing of seeds

martin luther believed that selling indulgences was wrong and gave people a license to sin. the roman catholic church used the practice of indulgences to raise money for major building projects.