Describe the traffic system. As well as the water, sewage & recycling system.   

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In 4-6 by Professor (17.2k)  

2 lessons

+2 votes
by Olympian (1.5k)  

The transport systems in USA



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by (-2,020)  

Moving people from A to B

Watch the video and give 5 examples why it is difficult build transportation systems

Thanks to Crash Course

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