The answer would be Collective Learning. The reason is, if a group of people fail in something they learn from those mistakes so they improve upon them, in doing so they share this knowledge with new generations. Each generation makes improvements on this knowledge.
Generally speaking, the French and Indian War in the colonies was about "<span>English trappers who wanted to settle the Ohio valley," since this is when the French and the English came into disputes over territorial expansion. </span>
Trains and cars and busses as well
Manchuria is the answer because the Japanese invaded on 1931
