Edit the following text to make it easier to read
In the 20th centuary,developments in the fields of technology, science and medicin,applied by humans, have brought about unprecedented changes
In the 20th century, developments in the fields of technology, science, and medicine, applied by humans, have brought about unprecedented changes.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Edit the following text to make it easier to read

### Response:
In the 20th century, developments in the fields of technology, science, and medicine, applied by humans, have brought about unprecedented changes.