Final answer:
The colony referred to as a "Squatter's Colony" because of settlement outside its charter boundaries was Plymouth.
Step-by-step explanation:
The colony that was called a "Squatter's Colony" because it was settled outside of the boundaries of its charter was Plymouth.
Unlike Jamestown, which was settled by the Virginia Company within the agreed terms of their charter, the Pilgrims who settled in Plymouth in 1620 had initially received permission to settle in the Virginia territory.
However, due to navigation issues, they landed north of their intended area, in what is now Massachusetts, without formal permission at the time, thus becoming squatters in that sense.