The British and French,
which closed the European coast and British Isles to American ships.
which closed the European cost and British bles to American ships.

Blockade

Explanation:

Basically blocking supplies from going in. From either allied ships or trade.

naturalization is the process of gaining united states citizenship. becoming an american citizen is the ultimate goal for many immigrants, but very few people are aware that the requirements for naturalization have been over 200 years in the making.