Answer:All of them
Explanation:
I answered it on Ed Corse and got it right
C. handling the process of sending international mail
A primary source is someone who was there at the time the event happioned or an artifact from that time line
secendairy source (sry 4 my bad spelling) is something from after the event or writen from after the event
The answer is c they learned how to grow food and survive from the american indians