Claim: Boston is located within a constitutional federal republic.
Evidence: Boston -LRB- pronounced -LSB- ˈbɒstən -RSB- -RRB- is the capital and most populous city of the Commonwealth of Massachusetts in the United States.
The United States of America -LRB- USA -RRB- , commonly known as the United States -LRB- U.S. -RRB- or America , is a constitutional federal republic composed of 50 states , a federal district , five major self-governing territories , and various possessions.