In the 1950s, people began to migrate to the Sun Belt states, which were mostly in the a)northeast and southeast b)northwest and southwest c)northeast and northwest d) southeast and southwest

  d) southeast and southwest

Explanation:

  The Sun Belt is a region of the United States generally considered to stretch across the Southeast and Southwest.The advent of air conditioning created more comfortable summer conditions and allowed more manufacturing and industry to locate in the sunbelt. The Sun Belt comprises the southern tier of the United States, including the states of Alabama, Arizona, Florida, Georgia, Louisiana, Mississippi, New Mexico, South Carolina, Texas, roughly two-thirds of California (up to Greater Sacramento), and parts of North Carolina, Nevada, and Utah.

the answer is use of support  

since most of current immigration into the u.s., both legal and illegal, is coming from latin america. it would be very difficult to imagine or rationalize a country my fellow citizens are trying desperately to flee into, would pose a threat to my prosperity or freedom. since the u.s. has a long history of intervention, but no record of permanent occupation, i would not feel oppression is the main objective.  

the largest free trade nation, along with the largest gdp in the world wanting to expand it's economic policy on us, and including us, could only be positive. the u.s. government has no interest in, or way of simply forcing american culture on us. and has no track record of it. other nations that adopted american social culture, or "americanization" did so voluntarily, mainly through the choice of allowing american businesses and u.s. citizens to come into their nations, as free operatives.