What were the positive and negative effects of railroad expansion in the second half of the 1800s?

• Positive: Increase travel speed. Negative: Decreased trade.
• Positive: Caused economic growth. Negative: Grueling and dangerous work.
• Positive: Hurt the economy. Negative: Lowered migration.

Which of the following inventors developed the telegraph?

• Thomas Edison
• Samuel Morse
• Alexander Graham Bell

What was a telegram, and how were telegrams used?

• A form of instant communication used to send photos
• A message sent over long distances via electrical signals
• A machine that printed newspapers for distribution

Why is Thomas Edison’s invention of the light bulb considered his most important?

• It provided a reliable and long-lasting source of light
• A message sent over long distances via electrical signals
• It powered the first electric train

How did George Westinghouse improve upon Thomas Edison’s work with electricity?

• He developed and built transformers that carried electric power over long distances
• He invented the telephone
• He improved the safety of the light bulb

How did Henry Ford’s assembly line method work, and how did it affect production?

• Each worker assembled entire cars one at a time
• Each worker focused on one specific task over and over to get the job done faster
• He improved the safety of the light bulb

made for the first time; a new tool or idea

• explorer

• dangerous

• invention

TRUE or FALSE: The Telegraph and Telegram are the same thing.

• True

• False

What American astronomer built a model airplane that was powered by a steam engine?

• Thomas Edison

• Henry Ford

• Samuel Langley

• Donald Trump