Native Americans planted crops of corn, squash, and beans. The beans increased the level of nitrogen in the soil. The corn required high levels of nitrogen and provided a support for the beans to climb and receive more sunlight. The large leaves on the squash shaded the ground and limited weed growth. This agricultural method

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This agricultural method is an example of sustainable agriculture because it enhances soil fertility (through nitrogen fixation by beans), reduces the need for chemical pesticides (by limiting weed growth with squash), and supports efficient land use (by using corn as a support for beans), all of which are principles of sustainability.

Native Americans Planted Crops of Corn, Squash, and Beans