Final answer:
The ethnic composition and cultural assimilation of immigrant groups in a suburban town near Boston, Massachusetts.
Step-by-step explanation:
The subject of this question is the ethnic composition and cultural assimilation of immigrant groups in a suburban town on the outskirts of Boston, Massachusetts. It focuses on the historical changes in the town's population, from being predominantly old New England stock to becoming predominantly Irish Catholic, and later welcoming Italian immigrants and other groups throughout the twentieth century.
The question also highlights the town's transition from being predominantly homogenous to tolerant of different ethnicities by the early twenty first century.