Omar was born and raised in Tanzania. He moved to the United States to study at one of its universities. Omar’s migration demons
trates the *** . Omar can be described as *** in the United States 1st ***
A. Push factor of a developed nation
B. Pull factor of a developed nation
C. Push factor of a poor nation
2nd ***
A. A refugee
B. An immigrant
C. An asylum seeker
causes of migration are often called “push factors,” because many migrants from Central America are primarily being “pushed” to the United States by conditions at home, rather than “pulled” here by opportunities. The main push fac- tors are hunger, violence, and extreme poverty.
<em>the swamp area transformed with chinampas during that period was about 12 thousand hectares, excluding islands and including channels and possible lagoons, which occupied about three thousand hectares.</em>
