Help! Which law created quotas that made it harder for southern and eastern Europeans to immigrate to the United States and easier for northern Europeans?

the Chinese Exclusion Act
the Immigration Act of 1917
the Emergency Quota Act
the Johnson-Reed Immigration Act

This is for the guy in the coments D is your awnser Now for everyone else the also D

Explanation:

here are some events that to cause increased conflict between the north and south

1) mexican cession- gaining modern day california, utah, arizona, and new mexico from mexico. caused southern and northern politicians to fight over whether or not there would be slavery in these newly acquired territories.

2) uncle tom's cabin- this famous book described the cruelty of slavery in the south during the antebellum period, causing more northerners to support abolition and southerners to resent the book as they felt it unfairly depicted southern society.

3) kansas- nebraska act- disagreements over whether or not kansas and nebraska would be free or slave states caused issues between northern and southern politicians in congress.

4) bleeding kansas- this fighting took place in kansas after congress allowed this territory to vote on whether or not they would have slavery. citizens were killed and buildings were destroyed during this fighting.

answer: what events

explanation:

you dont have any choices