Answer:
sputnik
Explanation:
it was a small satellite that made a radio signal that could be heard on earth
The Nile river was used as a major trade route. Also, they built deep holesin the ground for when the Nile floods every year. this way they had water to last.
The slave trade encouraged African nations to wage war and disrupted local cultures and economies. This in turn resulted in a failure to industrialize, making the nations of Africa far more susceptible to European colonization.
<span>Northerners lost interest in Reconstruction was because "B. Northerners were focused on the political corruption plaguing the nation," since this was during the Progressive Era. The Progressive Era was a period of widespread social activism and political reform across the US, from the 1890s to the 1920s. The main objectives was to eliminate problems caused by industrialization, urbanization, immigration, and corruption in government.</span>
The Babylonians created the system of counting by 60. It was based on the Sumerians' system.
