Revise the following statement so that it contains correct grammar.
The history of the United Sates are full of remarkable milestones
The history of the United States is full of remarkable milestones.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Revise the following statement so that it contains correct grammar.

### Response:
The history of the United States is full of remarkable milestones.