Which word collocation is correct in the following sentence?
In the 18th Century, European imports to the US __ vastly.
In the 18th Century, European imports to the US increased vastly.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Which word collocation is correct in the following sentence?

### Response:
In the 18th Century, European imports to the US increased vastly.