No. We don't have colonies across the globe and haven't made sport of conquering far away land rampantly like the Romans.
em•pire (ěm'pīr') Pronunciation Key
1.
a. A political unit having an extensive territory or comprising a number of territories or nations and ruled by a single supreme authority. (THE USA)
b. The territory included in such a unit.
2. An extensive enterprise under a unified authority: a publishing empire.
3. Imperial or imperialistic sovereignty, domination, or control: "There is a growing sense that the course of empire is shifting toward the . . . Asians" (James Traub).
em•pire
–noun
1. a group of nations or peoples ruled over by an emperor, empress, or other powerful sovereign or government: usually a territory of greater extent than a kingdom, as the former British Empire, French Empire, Russian Empire, Byzantine Empire, or Roman Empire.
Empire | Define Empire at Dictionary.com
Classification of current U.S. territories
Incorporated unorganized territories
Palmyra Atoll is privately owned by the Nature Conservancy and administered by the U.S. Department of the Interior. It is an archipelago of about 50 small islands about 1.56 square miles (4 km²) in area that lies about 1,000 miles (1,600 km) south of Honolulu. The atoll was acquired by the United States in the 1898 annexation of the Republic of Hawaii. When the Territory of Hawaii was incorporated on April 30, 1900, Palmyra Atoll was incorporated as part of that territory. However, when Hawaii became a state in 1959, Palmyra Atoll was explicitly separated from the state, remaining an incorporated territory but receiving no new organized government.
Unincorporated organized territories
Guam
Northern Mariana Islands (commonwealth)
Puerto Rico (commonwealth)
United States Virgin Islands
Unincorporated unorganized territories
American Samoa, technically unorganized, but self-governing under a constitution last revised in 1967
Baker Island, uninhabited
Howland Island, uninhabited
Jarvis Island, uninhabited
Johnston Atoll, uninhabited
Kingman Reef, uninhabited
Petrel Islands, uninhabited
Serranilla Bank, uninhabited
Midway Islands, no indigenous inhabitants, currently included in the Midway Atoll National Wildlife Refuge
Navassa Island, uninhabited (claimed by Haiti)
Wake Atoll consisting of Peale, Wake and Wilkes Islands[4], no indigenous inhabitants, only contractor personnel (claimed by the Marshall Islands)
Classification of former U.S. territories & administered areas
Former unincorporated territories of the United States
Line Islands (?–1979): Disputed claim with United Kingdom, all U.S. claims ceded to Kiribati upon its independence.
Panama Canal Zone (1903–1999): sovereignty returned to Panama under the Torrijos-Carter Treaties; the U.S. retains a military interest
Corn Islands (1914-1971): leased for 99 years under the Bryan-Chamorro Treaty but were returned after the abrogation of the treaty in 1970.
Roncador Bank (1856-1981): claimed under Guano Islands Act was ceded to Colombia in September 7, 1981 by treaty.
Quita Sueño Bank (1869-1981): claimed under Guano Islands Act was ceded to Colombia in September 7, 1981 by treaty.
Serrana Bank (?-1981): claimed under Guano Islands Act was ceded to Colombia in September 7, 1981 by treaty.
Philippine Islands (1902–1935); Commonwealth of the Philippines (1935–1946): Full independence in 1946.
Phoenix Islands (?–1979): Disputed claim with United Kingdom, all U.S. claims ceded to Kiribati upon its independence.
Former unincorporated territories of the United States under military government
Puerto Rico (April 11, 1899-May 1, 1900): civil government operations began
Philippines (April 11, 1899-July 4, 1901): civil government operations began
Cuba (April 11, 1899-May 20, 1902): sovereignty granted as Republic of Cuba
Guam (April 11, 1899-July 1, 1950): civil government operations began
Areas formerly administered by the United States
Trust Territory of the Pacific Islands (1947–1986): included the Compact of Free Association nations (Marshall Islands, Federated States of Micronesia, and Palau) and the Northern Mariana Islands
Ryukyu Islands (1952–1972): returned to Japanese control, included some other minor islands under the Agreement Between the United States of America and Japan Concerning the Ryukyu Islands and the Daito Islands.[5]
Other zones
Austria and Vienna (1945–1955)
Berlin (1945–1990)
Germany (1945–1949)
Guantánamo Bay (1903-) Nominal Cuban sovereignty, de facto sole US control.
Japan (1945–1952)
Rhineland (1918–1921?)
South Korea (1945–1948)
Iraq (March 20, 2003–June 28, 2004)
http://en.wikipedia.org/wiki/Territo..._United_States
We have an economic and military imperialist country.