The US never wanted to join World War II so they isolated themselves from everything that was going on and tried to stay neutral (Over time, we sided with the Allies). Mainly, we entered due to the Japanese attack on Pearl Harbor. After the bombing, the US decided to declare war on Japan. Soon after, Nazi Germany's leader declared war on the US and then the US was officially in the war.
So, all in all, it was the bombing of Pearl Harbor on December 7, 1941.
Hope this helps :)
Its actually VERY likely. I may be wrong, but My research doesn't say so :D<span />
The Social Gospel Movement originated during the second half of the 19th century. It grew from the ideas of religious protestant leaders, who wanted to associate good deeds to the possibility of achieving salvation.
The Industrial Age was an ongoing period of time during the appearance of the Gospel Movement in which there were numerous technological developments in manufacturing techniques that increased the output of many industries. Regarding personnel who worked in the factories, there were many excesses committed by business owners towards workers during this age, as the concept of labor rights was still inexistent. The Social Gospel Movement was key in influencing the improvement of the working conditions of the working classes. In the short term, it would immediately cut all excesses committed against the overall health and well being of the working class. In the long-term, it promoted what would become the legal framework for labor law.