S.S Things I need to understand. lots of points will be given?

Question

1) In the 18th, 19th, and early 20th centuries, what was the usual geographic factor that was common in the choice of where to build a city?
2) How did technology such as canals and railroads help the city to grow?
3) Give 4 reasons for the rapid growth of the city in the century following the Civil war
4) Why did the growth of the industry also increase the size of of the city?
5) Why did many farm people move to the cities?
6) What new technologies permitted the building and use of skyscrapers?
7) What inventions and innovation imporved the comfort and safety of people living in the city?

points go to CanProf.
thank you so much!!!!!
i understand it now~~

Answer 1

1) Access to water, both for consumption and transportation
2) By giving the city effective access to a hinterland and to markets beyond itself.
3) a) industrialization, b) electrication, c) wider range of services in the cities, d) reduced need for farm labor
4) Because industries located in the cities and required large labor forces
5) Jobs and modern amenities
6) Structural steel, fire-resistant construction techniques, elevators, telephones
7) Better sewerage and other public heatlh measures, electrical light and power, street cars, zoning regulations

Answer 2

1. A transportation means was necessary and a good source of water.
2. You have to be able to get food into a city and finished products out.
3. Railroads boomed during the Civil War and in the period right after (transcontinental railroad in 1868). Movement of people and goods got easy. Cities grew as jobs grew.
4. You needed a labor force. People flocked to where the jobs were.
5. Drought, harsh winters, and getting up to milk the cows at 5a.m.
6. The safety elevator and steel construction.
7. Stoplights, safety elevators, subways, and busses. Sprinkler systems and flush toilets.

Answer 3

1. near a river (just a guess)
2. brought water, people and commerce
3. jobs, farms destroyed, no more war, ?
4. more jobs meant more people
5. work and money
6. steel buildings
7. sewer systems, mass transit, electricity