Answer: Getting away from discrimination in America
France w<span>as among the most commercially advanced and prosperous countries in Europe.</span>
In the last year of the war, the US hade cryptographers who work to deciphere Japanese code messages. It is important to know that Japanese code and German code wheren't the same, they were easier to decipher, because of this the U.S. was able to understand 90,000 words.
Thanks to this, the US was able to know Japanese plans and defend themselves for any Japanese attack before they could even strike.
The notion of Manifest Destiny held that the United States was destined to extend its power, spreading its way of life and democracy all over North America. This expansionism brought new territories but there were disagreement on the slavery issue: while abolitionists would, at first, tolerate slavery in existing territories they did not want the new territories to be slave territories; the economy of the South was , however, heavily based in slave work. This disagreement impacted the conflicts of the Civil War.