The actual war between the United States and Mexico started after

the United States invaded Mexico.

Mexico invaded the United States.

the United States sent troops into the disputed border region.

Mexican forces attacked and killed American troops.

American troops seized a town in Mexico.

C.the United States sent troops into the disputed border region.

D.Mexican forces attacked and killed American troops.

Explanation:

religion played a major role in the american revolution by offering a moral sanction for opposition to the british--an assurance to the average american that revolution was justified in the sight of god. the revolution strengthened millennialist strains in american.

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.