People discovered fire in the Paleolithic age and also used tools made of stones and bones and also wear animal's skin as a clothing and also do cave paintings with natural colors.
Hello there,
They were motivated to to defeat more land's as possible. That's what the Incan law's motivated Huayna Capac to do.
Hope this helps.
~Jurgen
Its C. The Mayans had a calendar, but the Incas practiced divination, or fourtune telling.
Hope this helps! (P.S. This is my opinion)