The supreme court ruling in dred scott v sanford (1857) to increase sectional conflict because the decision

In Dred Scott v. Sandford, the Supreme Court ruled that Americans of African descent, whether free or slave, were not American citizens and could not sue in federal court. The Court also ruled that Congress lacked power to ban slavery in the U.S. territories.

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.

the answer is d the rejection of the olive branch petition.

explanation:

the olive branch petition was an attempt to state the rights of the colonists while keeping their loyalty to the british crown. hope this !

by kd