Due to the increase in population houses have to get crammed together and also put together more cheaply so there not as resilient to hurricanes.
Hope i could help!
The answer to this question is "passage of the G.I Bill".
Genghis khan is the founder and the first ruler during the Mongol period in 13 Century BC. Mongol invasions had great impact on Europe during medieval period.
The military powers of Mongolians were great and they were the first to conquer most of the western world. The wide spread bubonic plague which was planned by Mongols resulted in a genocide when huge population of Europe was killed.
After his conquer of Eurasia there was peace and he initiated the activity of trade and business in the Silk route.
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