Final answer:
The Pequots who were not killed at Mystic were either enslaved by other Native American tribes like the Mohegan and Narragansett or were sold into slavery in Bermuda and the West Indies, and their lands were seized.
Step-by-step explanation:
After the notorious battle at the Pequot fort at Mystic, Connecticut, where most of the inhabitants were killed, the Pequots who were not killed faced a grim fate as per the Treaty of Hartford, signed on September 21, 1638. Those who survived the attack faced enslavement; some were enslaved by the Mohegan or Narragansett, while others were sold into slavery in Bermuda and the West Indies. Additionally, the lands of the Pequot were seized by the colonists, effectively displacing those who survived from their homeland.