C Germanys attack on Poland. while not the first act of hostility by the Germans, the attack on Poland was the first and most clean bush to war.
The massive migration and the subsequent rapid settlement of the continental USA were fueled by the Gold Rush, the Oregon Trail (large-wheeled wagon road and emigrant trail in the United States that combined the Missouri River to valleys in Oregon) and a belief in "manifest destiny", the idea that its settlers were designed to expand across North America. This expansion began with the Louisiana Purchase in 1803. The president Thomas Jefferson bought the territory from the French for $15 million, and worked in the creation of an expansionist mentality. As a result this migration is also called Westward Expansion.
It was very important it was like a king the peapol follow the king. except they had to prove themselves unlike royalty. honor,<span />
Heres a quickie,
The Philipines
Mexico
And India