Answer:
Social media
Explanation:
One of the factors that contributed to the success of the 2011 and 2012 protests in the Middle East was the use of social media. Social media had not been used to this extent in protests in the region before. Therefore, protests that had been organized in previous decades could not have made use of it. In the case of these protests, social media contributed to the mobilization of people and the spread of news.
Answer:
Public access to social media
Explanation:
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It gave the Vietcong control of major urban centers.
It ended U.S.-North Vietnam peace talks that had begun shortly before.
It forced the United States to immediately withdraw its troops.
Answer:
A. It greatly damaged American popular support for the conflict
Explanation:
Answer:
a ruler whose associates make all the decisions for him
Explanation:
b. a process for making steel in a gas furnace
c. the first practical internal combustion engine
d. an instrument to detect icebergs using echoes
The correct option is "c. the first practical internal combustion engine"
Charles William Siemens was a German engineer. Siemens learned mechanical engineering, and his most important work at his early age was not electrical; the greatest achievement of his life, the regenerative surface. In 1847 he published an article in Liebig's magazine Annalen der Chemie on 'Mercaptan of Selenium', his mind was filled with new ideas about the nature of heat promulgated by Carnot, Emile Clapeyron, Joule, Clausius, Mayer, Thomson and Rankine. He discarded the old notions of heat as substance and accepted the idea of heat as a form of energy. Working on this new line of thought, which gave him an advantage over other inventors of his time, he made his first attempt to save heat by building, in 1847 at the John Hick factory in Bolton, a four-horsepower engine with a condenser provided with regenerators and using superheated steam. Two years later he continued his experiments in Messrs. Fox, Henderson, and Co, from smethwick, near Birmingham. The use of superheated steam had to overcome many technical difficulties, and the invention was not a complete success, but the Society of Arts valued the principle on which it was based, rewarding, in 1850, Siemens with the gold medal for the regenerative capacitor .
It change it in a way that Ottomans from now on held more control over the silk rode which forced Europeans into face the ATlantic to find new ways to the far East