Vicksburg was the last stronghold until the Union could have the Mississippi River. If they were to take Vicksburg, they would split the Confederacy and go along with their Anaconda Plan. They did so by starving Vicksburg to surrender.
2- he was apposed to the bill because it supported slavery
The first national road was started in Cumberland, Maryland
I know one was deteriorating relations with Spain. He negotiated for the purchase of Florida for $5 million for the expanding of US territories.