Inventions and Communication

Why was the invention of the mechanical reaper important?

• Cyrus McCormick was a great inventor.

• It made harvesting grain easier and more efficient.

• It freed farmers to do other jobs.

• It helped to feed more people.

What is the effect of the development of the technology in the timeline above?

• A. People were able to travel more quickly.

• B. Communication became harder.

• C. Information could be shared more quickly.

• D. The patent office blocked new ideas.

What impact did Bill Gates’ work have on the computer industry?

• He wrote a program that made personal computers easier to use.

• He provided electric car technology to the public.

• He created computer applications like Amazon and Email.

• He developed home security systems to help people be safer.

Why is Louis Pasteur's invention of the pasteurization process important?

• It makes milk taste better.

• It made people stop drinking milk.

• It helps cows make more milk.

• It made milk safe to drink.

Based on the information in the timeline below and your knowledge of history - Which answer choice belongs in Box A for 1994?

• Polio declared eradicated in the Americas.

• Polio vaccine declared a failure.

• Salk begins polio vaccine research.

• First polio vaccine given to children.

Which answer choice below can be considered a correct conclusion for why people today are living longer than in the past?

• A. Air pollution is damaging the lungs.

• B. People have less clean water and healthy food.

• C. Improvements in medicine and technology.

• D. Improvements in communication and record keeping.