Think about all of the inventions you’ve discovered in this lesson. which two inventions changed americans’ lives the most? explain your answer in a few sentences.

Steam Power and electricity profoundly changed the daily lives of Americans. Railroad helped expand US, telegraph, telephone and type writer brought people together.

Explanation:

Steam power helped replace the horse  driven wagons to a fuel driven locomotives as a means of transporting the goods and raw materials. Electricity paved way for automation. Man made goods were replaced by machine made goods. People largely relied on the machine made gods due to its availability and less production time.

Railroads expanded the united states. It also gave employment opportunities for the immigrants and the middle class workers. Transatlantic railroads offered comfort and feasibility for  the goods to reach the sellers. Telegraph and telephones made communications possible and it proved to be a status symbol in the ancient American households.

answer; /// i do believe that the correct answer is (d) cooperative play; /// good luck

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.