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.
Answer:Battle of Antietam
Explanation:The Union's important victory at the Battle of Antietam gave Lincoln enough public support to issue the Emancipation Proclamation, which promised to free all slaves in the Confederacy. A month before the Civil War began in April 1861, Abraham Lincoln talked about slavery in his first speech as president.
