Answer: The correct answer is : Dimensional analysis is a very useful tool for solving conversion problems in which a measurement with one unit is changed to an equivalent measurement with another unit. This technique is also called the Label Factor Method or Unit Factor Method.
The correct answer is the United States Department of Transportation. According to the Department of Transportation, their mission is to "The mission of the Department is to: Serve the United States by ensuring a fast, safe, efficient, accessible and convenient transportation system that meets our vital national interests and enhances the quality of life of the American people, today and into the future"
This means that the DOT is responsible for ensuring that transportation systems are up to date and meet the emerging needs of Americans.
All of the ancient civilizations were close to a major water source.
All of them practiced agriculture in order to provide enough food for their civilization.
All of them had some sort of irrigaiton in place in order to water down he fields.
All of them lived in socially stratified societies where a ruler was present.
Other guy is right. I didn't see A