How did the United States work to preserve a non-communist regime in South Vietnam in the time following the 1954 Geneva Accords?

The effective use of a knowledge technology should result in a(n):

Children begin to use tools at about what age? a. 18 months b. 2 years c. 1 year d. 6 months

Which best describes the purpose of the south carolina exposition and protest, which was written by john c. calhoun? a) to explain why the south was nullifying the tariff of 1828 b) to describe the ways the tariff of 1828 would southerners c) to persuade northern states to rebel against the federal government d) to ask england for if the south decided to secede from the union