Final answer:
The "War in the West" during the War of 1812 referred to the states of Connecticut, Massachusetts, Rhode Island, New Hampshire, and Vermont. These states held the key to New England, and the most successful general in the War in the West was Andrew Jackson.
Step-by-step explanation:
The "War in the West" referred to the states of Connecticut, Massachusetts, Rhode Island, New Hampshire, and Vermont during the War of 1812.
These states were seen as holding the key to New England, the Federalist stronghold, and their support or lack thereof could significantly impact the war effort.
The general who was most successful in the War in the West was Andrew Jackson, who achieved a smashing victory in New Orleans.