Answer:
a. mobile phones
Explanation:
One day some engineers decided to change the course of history. Thinking of a way to make communication more efficient and easy, they had the brilliant idea of creating a system that would be capable of communicating between cordless phones. The idea was not bad, but the technology of the time did not help much.
The real history of the mobile phone began in 1973, when the first call was made from a mobile phone to a landline. It was from April 1973 that all theories proved that the cell worked perfectly, and that the cell phone network suggested in 1947 was designed correctly. This was a not very well known moment, but it certainly was a fact marked forever because it was the moment that facilitated communication for most people through the creation of the mobile phone.
D. A primary source comes from someone who has actually witnessed the event, while a secondary source is not based off of firsthand experience.
Answer:
1.
Both were tall men for their times: Washington 6’3” and Lincoln 6’4.”
Both married women who were short. Mary Todd Lincoln and Martha Dandridge Washington were about five feet tall, and came up only to the chests of their husbands.
Both their wives came from prominent, wealthy families. At the time of their courtship, Washington's wife-to-be was said to be the richest widow in America.
Both fought in Indian wars.
Both were athletic—-excellent wrestlers and superb horsemen.
Both lacked formal schooling. Washington received none at all; he was tutored at home. Lincoln had about one year’s schooling.
Both were skilled frontiersmen.
Both became surveyors.
Both were inventive men of a scientific temperament. Lincoln got a patent for an invention to lift ships off shoals. Washington was an avid reader of agricultural manuals, and conducted a controlled experiment, planting various grains at the same depth in different soils. He also invented a plow that automatically dropped seeds in furrows.
2.George Washington was one of the driving forces behind the drafting of the Constitution. Meanwhile, Abraham Lincoln is credited with abolishing slavery. George Washington was born into a well-to-do family, and lived well throughout his life. On the other hand, Abraham Lincoln was born into a poor family.
The result of the Battle of Bunker Hill was a clear victory of the Americans.
