EVOLUTION OF SETTLEMENT
This will be our last Geography unit this course. After watching it, answer these questions: a) Which percentage of people in the world lives nowadays in urban areas? b) Which percentage of people lived in urban areas a hundred years ago? c) When and why did semi-permanent villages begin to be developped? d) When did these settlements become permanent? Why? e) Name some of the technologies that were developped in cities, linked to commerce? f) Some cities in 2.000 B.C. had population densities very high, how high? g) What did they build to protect the cities and defend them against attacks? h) How cities need to change to accommodate the growth of population in the future?