Not exactly lost but the US did give up the Philippines and Cuba. We also gave back Okinawa and the Panama Canal.
We also sort of lost territory in the Treaty of 1818 with the British (they gave us parts of the Dakotas and Minnesota, in return for part of modern-day southern Alberta)
No. We lost territory.
We lost the respect of Mexico
Puerto Rico became a US Territory following the Spanish-American War in 1898, and its residents became US citizens in 1917. It has been a US Commonwealth since 1952.
Denmark
Venetia
They lost most of their territory in the 1850's
No. We lost territory.
It lost almost half its territory.
Philippines.
We lost the respect of Mexico
Isolation.
No, it has been a US Territory since 1898.
It is the Commonwealth of Puerto Rico and has been a US Territory since it was ceded to the US after the Spanish-American War of 1898. It is however, no matter what name is used, still a US Territory of the US States without added right or privileges according to the US Supreme Court.
Arthur Zimmerman, German ambassador to Mexico.
No. It has been part of Mexico's territory since its independence in 1821. Also California was part of Mexico, but was lost to the United States at the end of the Mexican-American War (1846 - 1848).
Puerto Rico became a US Territory following the Spanish-American War in 1898, and its residents became US citizens in 1917. It has been a US Commonwealth since 1952.
Mexico lost half its territory and the US gained access to the Pacific. Both countries lost thousands of men (mostly volunteers) and at least to this date, provided Mexicans with a good reason to distrust any US involvement with Mexico.