What territory was added to the
slave side?

The Louisiana Territory

Explanation:

This would be "forever prohibited" area. Back in the 1820's, people laid down the Mason-Dixon Line which would separate free and slave states. The Mason-Dixon line was the Mississippi River

yes based on alexanders actions he deserved the title of "the great". his empire covered about 3,000 miles and he was able to establish the empire over a 13 year period of time. he was able to conquer many different places. he also defeated the persians. he conquered egypt and developed a city and named it after himself.

not sure might be he acquired the entire oregon territory from great britain