What word describes a world In which there are two sources of power

Answer:

mark twain called it the guilded age because: period was glittering on the surface but corrupt underneath

Explanation:

Causes responsible of the Arab spring Movement -

1. DissatisfactionwiththepresentRegimes-In most of the Arab countries the same person were ruling for long time who had taken strong steps to remain in power . Their own wealth had increased maifold whereas they took no step to improve the condition of common people.
2. ViolatiónofHumanRights-Today the whole world is conscious about the human rights and was committed to the protection of these rights. But in Arab countries the position of human rights was not very good, particularly the position of the rights of the women was very bad.
3. widespreadPoverty-we can say about the Arab people that thet are the inhabitant of right countries living in poverty . very few people have control over the wealth whereas the majority of the population was living in abject poverty. Some people are very rich whereas others were very poor who were not able to meet their daily needs.
4. Roleofwesternmedia-we cannot ignore the role of western media in the spread of arab spring Movement. though the critics have different viewpoint about this yet we cannot ignore the fact that the protestors were greatly influenced by the liberal democracy working in western countries and they wanted to have the same in the arab countries.
5. Economicrecession-Most of arab countries have big reserves of oil and were earning lots of money by selling oil to rest of the world. But for other goods they were dependent on other countries.

The correct option is D

Explain an event or a thing is to express through language, concepts, causes, descriptions, genesis or laws that coherently includes it as an element belonging to a set from the attribution of a particular property or set of properties to that object or event. However, an argument is an expression by which you try to prove, disprove or justify a proposition or thesis.

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 .

Along with the question the first option Tribesrefused to stay on the failingreservations describes a consequences of the reservation system in 1870s.

What was the reservation system?

In the nineteenth centenary, local Americans were restricted to doubt to unblock land for whitesettlers. The Indian doubt method was made to keep localAmericans off of lands that European Americans desired to settle. The doubt method permitted ancientmankind to authorize themselves. and to keepalive some of their societal and social heritages. The Dawes Act of 1887 demolished the doubt method by subdividing tribal lands into individual plots.

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