Answer:In an effort to preserve the balance of power in Congress between slave and free states, the Missouri Compromise was passed in 1820 admitting Missouri as a slave state and Maine as a free state.
Explanation:At the time, there were 22 states, half of them free states and half of them slave states. The Senate passed a bill allowing Maine to enter the Union as a free state and Missouri to be admitted without restrictions on slavery.
The correct answer to this open question is the following.
You did not include the map, we can comment on the following.
General Howe made his attack on the United States in the following way. General William Howe was to attack north from New York. Other generals such as John Burgoyne was coming down from the Canadian territory. So Howe decided to invade and capture the city of Philadelphia, Pennsylvania, instead of having a strategic plan that supported the efforts with Burgoyne's troops. What General Howe wanted to do is to gain support from Loyalists in Philadelphia. Let's have in mind that Philadelphia was a key city in those years because it was the place where the Continental Congress was located.
Pollutants on its surface caught fire and attracted media attention... hope it helps :)
I think it’s B and C hope it helps!