Choose one of the inventions listed, or find another device that was invented during this time. Write the story of its invention, including details about the inventor. Be sure to write at least four well-developed paragraphs. 1872- motion picture
1881- improved electric lamp
1890- zipper
1901- mercury vapor lamp

How was classical persia's extensive network of roads important to its civilization?

How does the supremacy clause of the u.s. constitution affect the states? o a. it requires each state to establish a supreme court. b. it declares that the federal government can take away state powers if necessary. o c. it allows state governments to overthrow the federal government if necessary. o d. it ensures that the u.s. constitution overrules each state constitution

After nine states had ratified the constitution by mid-1788, other states quickly followed. all thirteen states had to obey it. it became law in the united states. none of the states had to obey it.