Was the US justified in acquiring the territories which allowed the United States to reach the Pacific Ocean?

Which underlying american value is being expressed by the passage of anti-discrimination laws? 1.equality 2.patriotism 3.individualism 4.conformity

Who issued the ruling for the supreme court? dred scott roger b. taney abraham lincoln john c. calhoun

Which statement best describes a major advantage of a confederal system of government over a unitary system