Montenegro is 4.40 times as big as Rhode Island (US)
Montenegro is a country in southeast Europe on the Adriatic coast of the Balkans. It borders Bosnia and Herzegovina to the north, Serbia to the east, Albania to the southeast, the Adriatic Sea and Croatia to the west.
Rhode Island, officially the State of Rhode Island is a state in the New England region of the United States. It is the smallest U.S. state by area and the seventh least populous (1,059,361 as of 2019), but it is also the second most densely populated behind New Jersey. The state has land borders with Connecticut to the west, Massachusetts to the north and east, and the Atlantic Ocean to the south via Rhode Island Sound and Block Island Sound. It also shares a small maritime border with New York.