These engines were very useful to move machinery in mills, factories, pumping stations and transportationapplications. In the field of transport,steam engines were often used inlocomotives, ships and other land vehicles. Steam machines were of great importance in their application in the field of agriculture.
Cloth and spices brought back by the crusaders led to greater interest in trade.
Answer:
1. They needed a fair way to trade with other regions.
2. They used to trade with goods but that way of bartering became very confusing, so they created a currency to simplify this.
3. This use of currency could save time and energy for citizens who used to have to lug around heavy carts full of livestock or luggage.
4. The Ancient Phoenicians culture was based around the bartering and trade system. While this was fine for the time being the Phoenicians soon had a need for a modernized value. This is where the coin was brought into play which created a needed symbol of hard work and time spent.
Explanation:
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Answer:
William Crawford Gorgas, (born Oct. 3, 1854, Mobile, Ala., U.S.—died July 3, 1920, London, Eng.), U.S. Army surgeon who contributed greatly to the building of the Panama Canal by introducing mosquito control to prevent yellow fever and malaria.
Explanation:
Answer:
Action and reaction forces.
Explanation:
For every action, there is a reaction and it is equal and opposite. If object A exerts a force on object B, then object B will exert a force with the same power back.
