Someone help I really need to pass this exam!!asap I will give u a crown if correct;)))

California entered the Union as a free state.

A more effective fugitive slave law was passed.

The slave trade was banned in the nation's capital

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.