By Jeff, Akshay and Travis. The Great Depression was an economic slump in North America, Europe, and other industrialized areas of the world that began.
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The antimicrobial activity of green tea (Camillia sinensis) on Staphylococcus aureus in combination with ascorbic acid, acetic acid, and sodium chloride.
Neolithic Revolution Rapid changes over a few millennia - foraging to farming - large settlements; cities - written language: Sumer 3500 BC China 1500.
Statue of Peter the Great in St. Petersburg