A trough is a low turning point or a local minimum of a business cycle. The time evolution of many variables of economics exhibit a wave like behaviour with local maxima (peaks) followed by local minima (troughs). A business cycle may be defined as the period between two consecutive peaks.
In Dred Scott v. Sandford (argued 1856 -- decided 1857), 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.
People from Africa were shipped as slaves
Answer:
Yes, Mayans are Native Americans.
Explanation:
The Mayan civilization lasted nearly 2,000 years in Mesoamerica. It developed in an area that includes southeastern Mexico, the entire western territories of Guatemala and Belize, and Honduras and El Salvador. Despite cultural unity, the pre-Columbian Mayan civilization remained divided among many small nations until the end. The Mayan cities differed in their planned structure, size, duration of existence, political power, and artistic preferences. At the height of civilization, the Mayans spoke several languages, the speakers of which did not understand each other.