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.
All I know is part A to the question :The geography of India greatly influenced the location of early settlements on the subcontinent. Both the Indus and the Ganges rivers carried rich silt from the mountains to the plains. When the rivers flooded, the silt spread over the plains and made the soil in the river valleys fertile for farming.
Gatherers were the first to deliberately plant seeds.
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Winston Churchill thought of the iron curtain as a threat because it caused major tension between capitalist and communist governments. This eventually lead to Germany splitting into the west vs. the east and the Red Scare ( fear that many Asians were communist supporting spies) which led to much discrimination and unfair treatment.
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