I believe the answer is A. Unchecked immigration.
Answer:
Midwestern Migrant farmers may have difficulty adapting to the new type of soil and different seed type and crops. If the immigrant is from Mexico he might find more comfort growing the plants he knows about, more so than planting some different plant on <em>foreign </em>soil.
Even if the migrant is not from Mexico, that in the context of this question he/she would probably be. They could still find difficulty planting there. Because of different crops, climate, and plants.
In 1828, Jackson was elected president. He declared that the only hope for the Southeastern tribes' survival would be for them to give up all their land and move west of the Mississippi River. ... The U.S. government promised to compensate the tribes for the property they would have to abandon.
<span>Many aspects of today's society have been affected by ancient Rome . Creation oflaw, development of democratic government practices, influences in language,literature, art, infrastructure, and city-planning are all areas where the<span>influences of Roman ideas can be seen.</span></span>