Tangerine

Solving the Cryptogram reveals the message:

The only United States National Landmark on foreign soil is located in the country which was first to recognize its sovereignty.  This place is in a city that lends its name to a citrus.  Name the fruit.

The National Historic Landmark (NHL) of the United States is a building, structure, site, object or district that is officially recognized for its historical significance.  The American Legation building in Tangier, Morocco is the only site with this designation on foreign soil.  The building was presented to the U.S. in 1821, and is symbolic of the 1786 Moroccan-American Treaty of Friendship and the 1777 declaration by Moroccan sultan Muhammad III that his country’s ports were open to America – publicly recognizing the new country.
Tangier was an important port city, and was perhaps the first from which citrus was shipped to Europe from Asia.  In any case, this variant of the mandarin orange grew well in the Moroccan climate and became known as the tangerine.