como se dan las transformaciones en el planeta al igual que el origen de los sismos y erupciones volcanicas

Describe how gravity and convection work together to move the plates in the plate tectonics theory

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

  following the agreement that was reached in the treaty of indian springs in 1825, chief william mcintosh lost his life. why did this happen