What was the primary reason why settlers in the mid-to-late 1600s founded the southern colonies? to enjoy the warmer climate to build fisheries near the ocean to farm the rich soil found there to trade with the spanish

>> To farm the rich soil found there.

Explanation:

Southern Colonies established around the 1630's, and they had great profits thanks to crops of tobacco, dye and rice. Soil was rich and fertile as a result of the warm and humid climate from the South. Due to the fast growing crop industry, workers were not enough and African slaves became very popular on the Southern Colonies.

Due to the big demand and growing population of slaves, big inequality between social classes happened, which brought conflicts in the future.  

so you know what happened be fore you were alive

explanation:

you should think about the answers you give and expect the same form your questions.