Gravity, electrostatic force, and magnetic force all behave that way.
Answer:
Growing crops
Explanation:
The Native Americans knew how to grow crops and they showed the Colonists how as well. This was how the colonists survived. Squanto told the Pilgrims how to plant corn, squash, and beans. Other Indians taught the colonists about tobacco. Some served as guides and translators.
Irrigation systems helped farmers so they could get water.
Land available to farm in another country.
Jobs at a factory in an industrial town.
Such economic opportunities encourage migration.
