The Chavin civilization developed, in part, as a result of the merging of two large rivers--the Mosna and the Huachecsa--in the Mosna Valley, since these provided crucial irrigation for crops.
There must be a paragraph on The Bantu Immigration just read it lol
Answer:
Soldiers trained rigorously before the D-Day invasion. This was a one shot opportunity that would be extremely hard to duplicate. They had to be on point, prepared and ready to do whatever it takes. Training increases your chances of surviving and completing your assignment as best as possible. So in order to be in their best shape, they trained for months to prepare for that invasion.