How did the Kansas-Nebraska Act of 1854 conflict with the Missouri Compromise of 1820?

Question

1.The Missouri Compromise would not go into effect until the Kansas-Nebraska Act was passed

2.Northerners wanted to allow popular sovereignty

3.The Kansas-Nebraska Act banned slavery south of the Missouri Compromise line

4.The Kansas-Nebraska Act permitted the option of slavery north of the Missouri-Compromise line
my answer is 4 am i right??

Answer 1

Google says so:

The Kansas-Nebraska Act was passed by the U.S. Congress on May 30, 1854. It allowed people in the territories of Kansas and Nebraska to decide for themselves whether or not to allow slavery within their borders. The Act served to repeal the Missouri Compromise of 1820 which prohibited slavery north of latitude 36°30

Answer 2

So yes i am right??

Answer 3

Of course!

Answer 4

Ok cool thanks!!