Final answer:
The Hartford Convention in 1814 was a gathering of New England delegates to discuss proposals and grievances in response to the unpopular war with Britain. However, news of Andrew Jackson's victory in New Orleans overshadowed their efforts and marked the decline of the Federalist Party.
Step-by-step explanation:
The Hartford Convention was a gathering of delegates from Connecticut, Massachusetts, Rhode Island, New Hampshire, and Vermont that took place in Hartford, Connecticut in 1814. It was a response to the rising bitterness and feelings of secession from New England due to the unpopular war with Britain. The convention discussed various proposals and grievances, but their timing proved unfortunate as news of Andrew Jackson's victory in New Orleans reached Washington and overshadowed their efforts. The convention marked the decline of the Federalist Party in America.