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.
Irrawaddy, Salween, Chao Phraya, Mekong.
Answer:
The Tordesillas Meridian divided South America into two parts, leaving a large chunk of land to be exploited by the Spain. The Treaty of Tordesillas was arguably the most important event in all Brazilian history, since it alone determined that a portion of South America would be settled by Portugal instead of Spain
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