WILL GIVE BRANLIEST
The graph below shows the projected population makeup of the United States in 2050:

U. S. Census Bureau, International Data Base

Which of these will result if the future trend on this pyramid is correct?
decreasing income tax revenues
decreasing output by American manufacturers
increasing citizen participation during elections
increasing federal spending on entitlement programs

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.

a is correct

hope this let me know if it is right

i think they would live in caves or natural tunnels

d) a constitutional amendment