The correct answer to this open question is the following.
I think the U.S. backed down on its enforcement of the Treaty once gold was discovered in the Black Hills because the United States federal government had already signed and formalized the Treaty of Laramie in 1868, in which the government recognized that region of Black Hills as a territory of the Sioux Native American Indian tribe.
Let's have in mind that although large gold deposits were found in 1875 in Deadwood Gulch, Black Hills territory and thousands of people went there to find fortune, the territory already belonged to the Lakotas and the Sioux.
Answer:
Storms and diseases.
Explanation:
Storms, food availability and diseases are the problems you expect to have to deal with during the voyage because the storms and ocean diseases occur to the people traveling in the voyage. Storm is the major problem facing by the people during travelling into the ocean because it is unexpected and they have to deal with it. Diseases also occur to the people during their travel and sometimes due to long journey people face food scarcity.
A.) An economic system based on communism.
Why was the launch of Sputnik in 1957 important?
Sputnik, 1957 On October 4, 1957, the Soviet Union launched the earth’s first artificial satellite, Sputnik-1. The successful launch came as a shock to experts and citizens in the United States, who had hoped that the United States would accomplish this scientific advancement first.
La respuesta correcta a est apregunta abierta es la siguiente.
Las polis Griegas era el nombre con el que se identificaban a las "ciudades-estado" de la antigua Grecia. Atenas y Esparta fueron las dos polis o ciudades estado más importante de esa gran época. Particularmente, Atenas, fue considerada la ciudad más intelectual en donde prominentes filósofos como Sócrates, Platón, y Aristóteles desarrollaron sus conceptos filosóficos y compartieron su filosofía. La organización de estas ciudades permitía a las personas con aptitudes para el combate, convertirse en guerreros y defensores de la polis, así como permitía que los estudiosos siguieran por el camino del estudio de la filosofía al seguir a uno de tantos filósofos de la época.