It is false. the Emancipation proclamation freed all slave just before the American Civil War ended by Abraham Lincoln
Yo soy catholica que eres userd
It affected American business interests because the U.S was the main market for sugar and tariff on sugar was imposed.
If I was an ordinary person in my 1930s and aged 40 with a middle income job such as an 'office assistant', I would not be in favour of helping other countries.
I would personally prefer a policy of isolation from the rest of the world. Primarily, this would be because I had seen with my very won eyes, the death and destruction bought on by World War I and more importantly the Great Depression.
With millions of job less people, poverty and people barely making ends meet, I would want our government to concentrate on the welfare of our own people, rather than go to war with countries thousands of miles away.
