If you can choose more than one answer then choose B&C but if not choose B
Nations responded to threats to their allies by mobilizing their militaries.
By the time that anyone took back the decision to go to war, it was already too late because militaries got ready so quickly. It was like lighting a fuse, it happens so fast, it is almost impossible to stop.
Personally, I think it was to get rid of the OLD deal.
The Invention of Farming lead to the creation of river valley civilizations by making it so the civilization could live in these places and have food. The basic concept of river valley farming is that when the river tide goes up, then the soil becomes very fertile and you plant the crops.
The culture that developed the only writing system in the western hemisphere was Maya
:)
