The Andes are labeled with number 4.
The region labeled with number 3 is Patagonia.
Answer:
Towns grew up along the rivers which had access to the sea. Rivers also provided protection from invaders. Farmers grew crops in the fertile fields that surrounded the towns. The lack of mountains was good for farming, but it made the towns easier to be invaded by enemies.
Explanation:
Middle of the peninsula I hope I helped :C I wish I didn't got it wrong ;(
