The correct answer is b) It shows the relationship between supply and demand.
The circular flow diagram is a model in economics that basically explains how the economy functions. The main characters are households which represent costumers and the firms which represent producers. Explains how the economics function in a circular way, where there has to be always a supplier and always a costumer, for there to be a flow and an equilibrium in the goods that are produced, and the goods that are demanded.
Based on hieroglyphics and the invention of the calendar this is describing the Egyptians.
Answer:
Explanation:Wooden railroads, called wagonways, were built in the United States starting from the 1720s. A railroad was reportedly used in the construction of the French fortress at Louisburg, Nova Scotia, in New France (now Canada) in 1720. Between 1762 and 1764, at the close of the French and Indian War (1756–1763), a gravity railroad (mechanized tramway) (Montresor's Tramway) is built by British military engineers up the steep riverside terrain near the Niagara River waterfall's escarpment at the Niagara Portage (which the local Senecas called "Crawl on All Fours.") in Lewiston, New York.
