Documents World population (persons km²) Population today concentrated in floodplain areas.

Slide 1 Slide 2 World population (persons km²) Slide 3 Population today concentrated in floodplain areas Slide 4 Floods and water control were critical in ancient and modern…

Documents ECN202: Macroeconomics Trade. To trade or not to trade This is a question societies must answer and....

Slide 1 ECN202: Macroeconomics Trade Slide 2 To trade or not to trade This is a question societies must answer and history provides many examples of the battle between those…