The correct answer should be Elevated trains and subways replaced horse-drawn trolleys
Then, with the invention of the steam engine, electric motors and engines powered by the burning of fuels, ground transportation began to be performed by trains, cars, buses and trucks, among other vehicles.
Every day the means of transport are modernized more, gaining greater speed, efficiency and comfort.
Answer:hydrogen bomb
surprise attacks
bomb drills
shelters
Explanation:When the Soviets successfully tested the ____, many Americans were fearful of a _____. Schools held____while families built_____for protection
Answer:
Claims: state or assert that something is the case, typically without providing evidence or proof.
Authors present their claims in a text by telling the claim(central idea) and give support details to that claim
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The invention of the steam engine created many changes and additions to the technology of the time, including steam powered locomotives. Steam locomotives are vehicles that run on rails or tracks and are powered by steam engines. They were historically used for moving freight and other materials, as well as passengers.
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Apollo 11 was the spaceflight that landed the first humans on the Moon, Americans Neil Armstrong and Buzz Aldrin, on July 20, 1969, at 20:18 UTC. Armstrong became the first to step onto the lunar surface six hours later on July 21 at 02:56 UTC.