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.
Answer => It wrote the Declaration of Independence.
Explanation => Declaration of Independence by John Trumbull, 1819: The resolution for independence was among the most important accomplishments of the Second Continental Congress.
The social impacts that WWII brought to Texas were:
- 500,000 Texans—Anglos, African Americans, and Hispanics—moved from rural areas to job markets in nearby cities.
- Mexican Americans that fought were determined to seek equality.
- Women went to work to help the war effort ("Rosie the Riveter").
<h3>What were some social impacts of WWII on Texas?</h3>
More than 500,000 Texans left the rural areas to go to the urban areas in order to support wartime production. Women were not left out as they wanted to support the war effort.
Mexican Americans who felt marginalized and yet contributed to the war effort, tried to fight for their equality.
Find out more on the impacts of WWII on Texas at brainly.com/question/15229334.
The american civil war started 1861 and ended 1865
