Which of the following are two main ideas of the article?

1 The Northern and Southern states disagreed over whether or not people should have slaves.

2 The Confederacy was formed when Southern states decided not to be a part of the United States.

3 Abraham Lincoln was elected president in 1860 and allowed slavery to remain in Southern states.

4 The Northern states won the Civil War and millions of slaves were awarded their freedom.

A 1 and 3

B 2 and 3

C 3 and 4

D 1 and 4
any body who answers i will give brainliest