Answer:
The U.S. entered World War I because Germany embarked on a deadly gamble. Germany sank many American merchant ships around the British Isles which prompted the American entry into the war.
Answer:
Sectionalism divided the country between North and South.
One of the main causes of this dissension was the existence of slavery.
The Southern states claimed they had the right to demand that their states' rights superseded national concerns.
Explanation:
Looked it up on google I hope this helps
Mark Brainliest if correct please :)
That is definitely Okies, I did this literally yesterday. Plus it's in my book. Hope this helped! :)