Communist rule in Russia ended in 1991 due to Tsar Nicholas II losing his power in the midst of the February Revolution. This marked the end of the Soviet Union.
It allowed ideas to spread faster
Access to food, water, shelter, and all basic human needs can hinder or help the growth of a civilization. Civilizations with similar environments or climates tend to develop on similar paths (because they run into the same problems/conveniences that have to be solved by human brains, which are wired to react to certain situations in certain ways.)
<span>artificial intelligence
biomedical technologies
agricultural technologiesl
atomic bomb
drones</span>
The greatest advantage of United States in world war II was its ability to rapidly transition from peace to war and mass produce weapons and war equipment at a colossal scale. This was so effective that the USA was able to make up for time lost, and the nation was able to effectively train the necessary forces and then exert a massive material superiority.
America was able to build up an air force that came to dominate the skies, and with this air superiority, it was all but over for the enemy, the Axis forces.
