I am not sure what exactly you want to receive as an answer but Ill give 2 examples.
After the rise of the Third Reich Jewish people were forced to migrate from Germany to neighboring countries and a lot of them in fact fled to United States including the famous scientist Albert Einstein.
The other example is the forced migration of Native Americans during the settlement and colonization by the American Colonies as they were trying to go farther down the continent.
Operation Olympic was the first phase of Operation Dawnfall which was designed to occupy Japan, It was supposed to take place in November 1945 on the Kyushu island in southern Japan. The plan included 14 army divisions in the initial landings alone, an armada of 400 destroyers, 24 battleships and a staggering 42 aircraft carriers. It was all based on an aphibious landing in three diferent beaches: at Miyazaki, Ariake and Kushikino. The weakness of this operation was the location, Kyushu island was the only one that was in conditions for an invasion of these characteristics. So the japanese succesfully predicted it, they were ready to use all of their force to defend the island with the Ketsugo plan. As a result, both sides had estimated that the casualties would be huge. Finally the invasion never took place as the atomic bombs were dropped in Nagasaki and Hiroshima making Japan surrender.
I know one cause was because he wanted to find India
Trade was a fundamental aspect of the ancient Greek world and following territorial expansion, an increase in population movements, and innovations in transport, goods could be brought, sold, and exchanged in one part of the Mediterranean which had their origin in a completely different and far distant region. <span />
