Answer:
The Mexican government had not kept its
promise to protect their rights. I think it's this one.
Answer:
coastal erosion, potential impacts of sea level rise, water quality deterioration, and sea water intrusion.
Freed slaves or the enslaved negroes/black farmers migrated to western territories because the west was new and the United States Agrarian Reform had promised them a free land which is forty (40) acres and a mule under the Homestead Act of 1862.
China joined the side of the Tripple Entente during World War I.