Where did mastodons migrate from in nort American?

Mastodons, which roamed North America during the Pleistocene epoch, are believed to have migrated from Asia via the Bering Land Bridge, a land connection that existed between present-day Alaska and Siberia. As they moved southward into North America, they adapted to various environments, including forests and grasslands. Fossil evidence indicates that they traveled across the continent, with significant populations found in the eastern and western regions. Their migration patterns were influenced by climate changes and the availability of food sources.