The "poll tax" was an example of a voting requirement that was used to prevent African Americans from voting, since blacks were disproportionately poorer than whites during this time.
The first civilizations that we have knowledge of developed in the valleys of major rivers: the Nile (Egypt), the Tigris and the Euphrates (Mesopotamia), the Yellow River (China) and the Indus River (India).
These civilizations developed in the valleys of rivers because this environment provided them with various vital resources. A constant and reliable source of water was needed for the development of agriculture, which allowed them to sustain large populations. Agriculture also flourished due to the fertile soil that tends to surround river valleys. The rivers also worked as a highway, allowing them to develop trade and facilitating the exchange of information.
Einstein's two postulates of special relativity are as follows, 1. The principle of relativity: The laws of physics are the same in all inertial systems. ... The constancy of the speed of light: Observers in all inertial systems mea- sure the same value for the speed of light in a vacuum.
Answer:
Nicaragua
Explanation:
The U.S. maintained troops in Nicaragua throughout the Wilson administration and used them to select the president of Nicaragua.
