More ideas were able to be made like house electronics for example: the washer, a dishwasher, the lightbulb and many more, oh and also AC current which we still us to this day because it is safer and that is how the Tesla coil works
The answer is A, the company that writes these school workbooks makes the question sound way more confusing than it has to be.
The Cold War began after the surrender of Nazi Germany in 1945, when the uneasy alliance between the United States and Great Britain on the one hand and the Soviet Union on the other started to fall apart. ... The Americans and the British worried that Soviet domination in eastern Europe might be permanent.
