Conversation so far:
how long have the Mashantucket Pequot Tribe been part of the world?
Scholars believe that the Pequots migrated from the upper Hudson River Valley into central and eastern Connecticut around 1500.
What have the Mashantucket Pequot Tribe done in the early ages?
By the time that Plymouth Colony and the Massachusetts Bay colony were being established, the Pequots had established military dominance among Indian tribes in central and eastern Connecticut.

Question: Did they have any competition?
Self-contained rewrite: Did the Mashantucket Pequot Tribe have any competition?