The russians practiced communism where as the west (usa,britain,france) were anti communist. the us were capitalists , thus is would make sense that the ussr and the usa would clash eventually despite their pasts of helping eachother out. once russia clashed with the west it gave way to the cold war
Unclear winner in Florida with much tension rising since it was left undetermined for awhile. Constant fighting between the two parties and so the Supreme Court had decided to intervene which led to the most controversial supreme court decision in American history.
The main way in which the development of the steam locomotive was so important to industrialization is that it allowed for steam to be used in factories that could use the steam power to run engines that could assemble products and create textiles with unprecedented speed.