The land bridges helped Native Americans across certain countries. They followed the animals from Asia or the countries below to America. The ice age animals migrated from (i don't what countries or parts. But i think it was Asia or some below.) The native Americans wanted to kill animals for food, shelter, clothing, and to upgrade their weapons. Land bridge was created over Asia to America around "The Ring Of Fire". they used that bridge to travel or get to America. When time passed, little by little the bridge was fading or drowning. (I don't really know what happened. But as i remember from my lessons, this is what i remember.)
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