One of the main nations envolved is the United States
" if he had been left to himself " is a subordinate clause because it does not form a complete sentence..it cannot stand by itself
1)
The Virgen de Guadelupe, which is how the Mexicans worship Mary, mother of Jesus, is believed to have some influence of the indigenous culture in the way she is portrayed.
2) Although the language of Mexico is Spanish, many names are in indigenous languages, such as Xochimilco
In many places the indigenous languages are still spoken, although the original religions and cultures are mostly replaced by the Spanish one. (so for example, they would have western-style school, at which the indigenous languages are taught).
Answer: Bread
The museum is called The Museum of Bread Culture