The Answer is individual v. Nature
Divide with a dot or space
The speaker had an unpleasant experience of America and had a negative first impression. This feeling stayed with the speaker even after the event.
Answer:
It's not an error to end a sentence with a preposition, but it is a little less formal. In emails, text messages, and notes to friends, it's perfectly fine. But if you're writing a research paper or submitting a business proposal and you want to sound very formal, avoid ending sentences with prepositions.
Explanation: