At 180 degrees longitude, the "International Date Line" represents the point at which the Eastern and Western Hemispheres experience different days, since this line "zigzags" around the 180 degree mark.
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
Explanation:
Answer: The U.S constitution.
Explanation:provided Congress the power to establish post offices.