The two actions by the Federal Government that were attempts to preserve the Union in the face of a bitter quarrel over slavery are Missouri Compromise and Compromise of 1850. Option B is correct.
The Missouri Compromise constituted the legislation that admitted Maine to the United States as a free state along with Missouri as a slave state, thus maintaining the balance of power between North and South in the United States Senate.
The Compromise of 1850 consists of five laws passed in September of 1850 that addressed the issue of slavery.
America faces many challenges before even reaching San Juan Hill such as 500 villagers fighting off the Americans. Another thing that proved to be difficult was the Spanish shooting down hundreds of American soldiers. However these issues are overcome in the result of capturing Kettle Hill as well as San Juan Hill. All in all, the challenges the Americans faced were due in part to the Spanish defenders of the village and the Spanish artillery.
Rule by a single leader with unrestrained power.