What was the main reason that colonists settled In the south

Farming

The weather in the South was good for the colonist to grow rice, tobacco, sugarcane, and indigo. These crops brought riches to the farmers who grew them. The weather of the North couldn't support these crops but the south did. This was the main contributor for people to settle the South.

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.