Why did many early national leaders encourage westward expansion? they wanted to expand slavery. they wanted to abolish slavery. they wanted to expand trade. they wanted to restrict trade.

Explanation:

They wanted to expand trade is the true option out of the four, but the true answer is Manifest Destiny. Manifest Destiny is when Americans thought they had the God given right to take up the whole territory of North America.

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.

reread your text and you will find the answer. stay focused ignore all your distractions.

explanation: