Why did the united states seek trade cooperation with latin america?

The correct answer to this open question is the following.

The United States seeks trade cooperation with Latin America because the US wants to increase more demand for American products in countries of Latin America.

Indeed, there was a word that identified this situation. It was Panamericanism. The US knows that Latin America is a potential market with millions of consumers that can purchase US products and services if they are affordable. Let's remind that countries in Latin American are "developing countries" that not have the income that US citizens or Canadian citizens have. So prices should be according to Latin American people's income.