What does jonathan mean by the phrase “two names, two worlds”? what are the two worlds his name represents?

He means that his name is both American and Dominican. His name speaks to the two worlds he lives in- - the world of a normal American kid and his cultural world of Spanish legacy. They propose two unique societies - Jonathan is more European and Rodriguez is Spanish. He was brought up in New York City, and furthermore rural Connecticut.

In the midwest because it has more moderate climate than the north or south west which makes farming far easier.