The primary effect of the American Revolution on an international level was that it inspired many other countries, most notably the French to undergo revolutions of their own.
Robert Fulton built the first safe and practical steamboat, The Clermont in 1807. This steamboat could make a 150 mile trip, from NYC to Albany, in roughly 32 hours.
The economic cycles consist on different periods, from booms to recessions or slumps. During booms production tends to increase, firms tend to further invest to meet the increasing demand, they even invest in labor force, which constitutes part of the capital of any company. However, the economy reaches a point in which demand outpaces production, and as they have all resources working at full capacity, they tend to raise prices seeking to reduce that demand. As people cannot afford good and services, firms stop investing and as a result production falls, so that they do not need their employees, so unemployment rate rises as a result of dismissals. This is known as recession or contraction of the economy. To sum up, the graphs should depict an increase in unemployment rates when prices are high, and a low unemployment rate when prices are low.
Dead Sea alive with mining activity. The Dead Sea is proving to be a rich source of minerals, including potash. The Dead Sea Works is using a method developed by the company to mine these minerals and export them to the world at large. Hope I helped!