The answer here would be Aristarchus. He presented the first known Solar System model that showed the sun as being the center of the universe with the earth revolving it. He was also the first one to show that the Earth rotated on an axis.
<em>Because of this mistaken belief, Young put roadblocks in his own path. However, he had laid a solid groundwork for others in their attempts to decipher the hieroglyphs.</em> Based on this excerpt James Cross Giblin believes Young made valuable contributions to future researchers’ attempts to decipher the hieroglyphs. He explicitly says that he <em>laid solid groundwork </em>meaning his contributions paved the way for the ones coming behind.
The fact that he may have made mistakes in his own path does not overshadow his previous work.
B) There was no separation of powers.
Answer:
C.) Great Britain ceded the Oregon Country to the United States to settle a dispute over boundaries.
Explanation:
After the civil war the expansion of the American territory began, in the decade of 1840 the Oregon Treaty was signed whose name is the "Treaty with Great Britain regarding the western limits of the Rocky Mountains" and the border between British and American sections of the "Oregon Territory". This had been occupied by the British and Americans since the Anglo-American convention of 1818 when it was accepted in the common domain of the region.
The treaty was negotiated by James Buchanan, the US Secretary of State and Richard Pakenham, the royal council member of Queen Victoria and special envoy of the queen.
Human migration occurred because of several factors. The reasons are the following:
1.food shortages
2.War
3 Seasonal changes
4.Disease and epidemic.
Africans are nomadic people. They thrive more from their environment. They only had to stop migrating during the agricultural era, wherein they learn to plant and tend crops and started cattle herding.
