How did hunter-gatherers learn to use the natural environment?

They used wind to power windmills.
They used rivers to provide irrigation for farming.
They used fire to clear fields for farming.
They used wood and stone to make tools.

Me! these questions are based on american people in the south essential questions: question 1: for what reasons will one group of people exploit another?focus questions: question 1: what influenced the development of the south more: geography, economy, or slavery?question 2: what were the economic, political and social arguments for and againsts slavery in the first half of the 19th century.