Classify the following sentence into one of the categories: descriptive, narrative, expository, persuasive, or general.
Technology has changed the way we communicate.
Expository
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Classify the following sentence into one of the categories: descriptive, narrative, expository, persuasive, or general.

### Response:
Expository