English, French, Spanish, and Portuguese are spoken in the Americas (the western hemisphere) because of

The Spanish language is the official language in all South American countries with a few exceptions, namely: Brazil, Guyana, Suriname and French Guine . Portuguese is the official language in Brazil. There are a great numbers of Spanish speaking countries , however, Portuguese is the major language of South America, (for the huge population it has) only by a small margin. Spanish, with just fewer speakers than Portuguese, is the second most spoken language on the region.

Explanation:

the answer to your question is,

old stone age.

-mabel < 3