Complex sentence: When the first European settlers arrived, what is now Prince Georges County was inhabited by people of the Piscataway Indian Nation three branches of the tribe are still living today, two of which are headquartered in Prince Georges County.
Split into simpler sentences: When the first European settlers arrived, what is now Prince Georges County was inhabited by people of the Piscataway Indian Nation. Three branches of the tribe are still living today, two of which are headquartered in Prince Georges County.