Which country in latin America whose language and culture was influenced by Portugal?

Brazil is the only country in Latin America whose language and culture was influenced by Portugal. This is because Brazil was a colony of Portugal for over 300 years, from 1500 to 1822. During this time, Portuguese was the official language of Brazil and Portuguese culture was widely adopted by Brazilians. As a result, Brazil is the only Latin American country where Portuguese is the official language and where Portuguese culture is dominant.