Ans: In geology, the crust is the outermost solid shell of a rocky planet, dwarf planet, or natural satellite. It is usually distinguished from the underlying mantle by its chemical makeup; however, in the case of icy satellites, it may be distinguished based on its phase.
Boulder Dam
Explanation:
Hoover dam, named after president Herbert Hoover, was originally called Boulder Dam after the name of the labor colony built in the vicinity of the dam for the workers. It is located in the black canyon of the Colorado River near Boulder City at the borders of the U.S. states of Nevada and Arizona.
Answer:
Explanation:
The legislation in question is the Indian Removal Act, 1830 and the answer is C). John Ross and the Cherokee Indians petitioned the Supreme Court to rule against it.
Black codes were restrictive laws designed to limit the freedom of African Americans and ensure their availability as a cheap labor force after slavery was abolished during the Civil War. Though the Union victory had given some 4 million slaves their freedom, the question of freed blacks’ status in the postwar South was still very much unresolved. Under black codes, many states required blacks to sign yearly labor contracts; if they refused, they risked being arrested, fined and forced into unpaid labor. Outrage over black codes helped undermine support for President Andrew Johnson and the Republican Party.