Stalin took a number of actions that heightened the tension between the US and USSR.
<u>Berlin Wall: </u> He was able to show the power of the USSR, and make a symbol of Communism that stopped people from entering the Democratic nations.
<u>Supplying other Communist countries and rebels: </u> The USSR helped supply the rebels to take overthrow standing governments and setting up Communist governments. Because the US did not want Communism to spread over the world, it heightened the Cold War tension.
<u>Supplying nukes to Cuba - Cuban Missile Crisis: </u> The USSR supplied ~100 nuclear weapons to Cuba, which made the weapons close enough to strike the US. The US then took steps to contain the missiles. It ended with the Russian nukes being returned home, and the US missiles were removed from Turkey and other NATO nations near the USSR.
<u>Iron control:</u> Stalin started the hate because he did not give more rights to his citizens, and this heightened the tension, because the US wanted him to give his people more rights.
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Conflicting ideologies, depression, division of cultural groups, invasion of Poland
The Kansas–Nebraska Act of 1854 was an organic act that created the territories of Kansas and Nebraska. It was drafted by Democratic Senator Stephen A. Douglas, passed by the 33rd United States Congress, and signed into law by President Franklin Pierce. Douglas introduced the bill with the goal of opening up new lands to development and facilitating construction of a transcontinental railroad, but the Kansas–Nebraska Act is most notable for effectively repealing the Missouri Compromise, stoking national tensions over slavery, and contributing to a series of armed conflicts known as "Bleeding Kansas".
The United States had acquired vast amounts of sparsely-settled land in the 1803 Louisiana Purchase, and since the 1840s Douglas had sought to establish a territorial government in a portion of the Louisiana Purchase that was still unorganized. Douglas's efforts were stymied by Senator David Rice Atchison and other Southern leaders who refused to allow the creation of territories that banned slavery; slavery would have been banned because the Missouri Compromise outlawed slavery in territory north of latitude 36°30' north. To win the support of Southerners like Atchison, Pierce and Douglas agreed to back the repeal of the Missouri Compromise, with the status of slavery instead decided on the basis of "popular sovereignty." Under popular sovereignty, the citizens of each territory, rather than Congress, would determine whether or not slavery would be allowed.
Answer: What is the question here? I don't understand.
Explanation: