What did native american groups use as a way to improve hunting or to clear land for certain plants to grow

Native American groups used FIRE as a way to improve hunting  

Explanation:

According to the European conquest of America, forest fires were used by the indigenous peoples to alter their landscape.

Such fires were one of the ecological cycles and preservation of biodiversity that preserved the cultures and economies of the populations.

What settlers first thought of as 'wild and untouched' land in North America,, in fact, the accumulated result of these periodic controlled fires that created a deliberate array of grasslands and forestry in North America, which were sponsored and maintained by the original inhabitants.

Burning the underground forest creates forest openings that allow corn-bearing oaks to grow more effectively.

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