Negative: 1  Pollution increased, working conditions were harmful, and with the employed of women and young children, making them work long and hard hours. 2  From the time of its start, the factories and industry has increased the amount of carbon dioxide in the atmosphere by two-folds.
Causes of the Cold War. Cite This Source. Causes of the Cold War Summary & Analysis. In 1945, the United States and Soviet Union were allies, jointly triumphant in World War II, which ended with total victory for Soviet and American forces over Adolf Hitler's Nazi empire in Europe.
Confidence votes 59. 1  The Vietnam war started because American president Eisenhower did not want communism to spread throughout the world and eventually to America. 2  The basic answer is that the U.S. was asked by France, via NATO, to keep the communists from taking over the French Territory.