The original purpose of the SS was to serve as a protection squadron for Hitler and many of his political allies, although it quickly turned into a terrorist force that upheld the values of the Nazi Party in Germany.
The US set up their own government in Japan. It was a democracy and with the spread communism throughout the world the US wanted an ally in Asia that they could basically use as their own military base to stop the spread of communism. Also the enemies of the US in Japan were basically gone. The majority of the soldiers that posed a threat killed themselves after the Emperor told them to surrender. As for the Soviet Union they completely saw what the US did in Japan and this angered them and they continued to try and spread communism. However the relations between the 2 countries were never good. Both just knew that they needed the other in order to win the war and because after the war they no longer needed each other, they just split and went their separate ways. Think of it as a bully and the kid he bullies in a class together. They don’t like each other at all but they might just work together because they don’t like the teacher or don’t want to do the assignment or whatever. Basically the US and Soviet Union just had a common enemy in Germany and that’s all that ever brought them together.
Hope that helped!
During reconstruction the Southern states needed to be rebuilt. There were attempts to rebuild, revive the Southern economy, and put the South back up to where it had been. The 13th-15th amendments were also created during this time. However, reconstruction ultimately failed as freed slaves were not properly integrated into society and the efforts to reconstruct were not effective
Since they needed workforce and the natives were uncooperative, the portuguese used their vast number of colonies in Africa to "import" workers