<span>July 6: Carnegie Mellon Researchers Find Social Security Numbers Can Be Predicted from Publicly Available Information
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Answer:
India was fragmented to 100 of kingdoms. Each kingdom was ruled by powerful regional chiefs. Most of these small kingdoms engaged in warfare with their small armies.
7.7 billion people on the earth
The development of a farming culture among pre-Columbian Native American Indians helped ensure a more stable food supply.
