Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think and behave and can lead to a variety of emotional and physical problems.
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He created the first usable versions of scissors, portable bridges, diving suits, a mirror-grinding machine similar to those used to make telescopes, and a machine to produce screws.
He also built some of the first odometers used to measure land speed and anemometers, for measuring wind speed.
Political machine, in U.S. politics, a party organization, headed by a single boss or small autocratic group, that commands enough votes to maintain political and administrative control of a city, county, or state.
The rapid growth of American cities in the 19th century, a result of both immigration and migration from rural areas, created huge problems for city governments, which were often poorly structured and unable to provide services. In those conditions, political machines—such as Tammany Hall, run by boss William Magear Tweed (1823–73) in New York City—were able to build a loyal voter following, especially among immigrant groups, by performing such favours as providing jobs or housing.
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The U.S. Constitution and state constitutions allow for amendments. ... Most of them follow the form of the U.S. Constitution closely, leading to similarities between the documents .