In this task, you're given a statement, and three sentences as choices. Your job is to determine which sentence clearly disagrees with the statement. Indicate your answer as '1', '2', or '3' corresponding to the choice number of the selected sentence.

Statement: But as the invaders advanced north towards Rome, Naples successfully linked up with the then powerful maritime republic of neighboring Amalfi. Choices: 1. The city of Amalfi has a strong navy. 2. The cities of Naples and Amalfi have a longstanding relationship. 3. The invaders were peacefully overriding the city of Rome.
3