Which factor created a risk of a war between the allies and the soviet union?
a.
the soviet annexation of eastern romania
b.
the signing of the warsaw pact in 1955
c.
the soviet blockade of west berlin in 1948
d.
the soviet takeover of the baltic republics

The correct answer is option C

The factor that created a risk of war between the Allies and the Soviets Union was the Soviet blockade of West Berlin in 1948.

Explanation:

In 1948, the Soviet Union had blocked the west side of Berlin cutting supplies and communications in a part of Berlin that was controlled by the Allies (the United States, United Kingdom and France)

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; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;