Because most of the enslaved natives died of disease, just like the natives who weren't enslaved. At the same time, there was an economic collapse in West Africa, leading to an almost unlimited availability of cheap slaves.They had all died off due to European diseases.They were defined by the Queen of Span as her subjects, the Africans were not.
The cause of the revolution was because the american people wanted to be free from the british and they were taxing everything and the americans were not having it.
There is no greater jump in human history in terms of warfare than the jump during World War I and the jump during World War II.
World War I marks the first major debut of killing technology onto the world stage. This included airplanes, chemical weapons, and more.
As a result, humans could kill or ruin the lives of other humans with brutal efficiency.
Hitler ignored the treaty. He wanted to invade all of the counties surrounding Germany. He wanted to eventually control the entire world.