Answer:
his support for the french revolution
Step-by-step explanation:
The Federalist Party was a political party of the early decades of the United States, active from 1792 to 1816. Members of that party opposed the Democratic-Republican party, which was Thomas Jefferson's party, so the federalists opposed Jefferson.
This opposition was due to different ideologies. In the mid-1800s the French Revolution and the Napoleonic Wars were the most important conflicts that directly influenced the sovereignty and government being built in North America. Jefferson was a great supporter and supporter of the French revolution, since he disagreed with the existence of a monarchy and supported the growth of France as a republic. This support was the main reason for the Federalists' attacks on Jefferson, as the federalists supported the existence of a monarchy and even admired the monarchy imposed in the united kingdom.