The Zimmerman Note was a note sent from Germany to Mexico asking Mexico to align itself with German interests. If the US entered the war and if Mexico opposed the US, the reward would be Arizona California and one other state -- perhaps Texas. It was a major contributor to the declaration of war on Germany by America.
The sinking of the Lusitania was another major event. When the Lusitania was sunk, 2000 people were affected.
Submarine warfare really aggravated the US. Many merchant ships were sunk.
Answer: B
1. The internet
2. The car
3. AI
4. The wheel
5. The Telephone
6. Pens/Pencils- we wouldn’t have many documents without it
7. Currency
8. Harnessing Electricity
9. Languages
10. School
Pull factor means a factor that attracts someone towards something, so the answer would be these 3 options:
Political tolerance of religious minorities
Abundant and cheap land
Abundant factory work
Poll taxes means you have to pay a tax before allowed to vote. That's a way of preventing poor persons (like blacks in the South) from voting.
Literacy tests would require persons to pass certain standards of reading and writing in order to qualify for voting. Again, such methods were aimed at blacks, who had not had access to the same education as whites.
Jim Crow laws were all sorts of segregation laws aimed at keeping blacks in "their place" and away from places where white society did not want them to be.
All such measures were used to promote segregation and limit the rights of blacks. So the answer that doesn't fit is "crop subsidies," which would be payments made to assist farmers.