The Pacific Railroad Act stipulated that the Central Pacific Railroad Company would start building in Sacramento and continue east across the Sierra Nevada, while a second company, the Union Pacific Railroad, would build westward from the Missouri River, near the Iowa-Nebraska border.
Four of those inventions were, The hot air balloon, the light bulb, mayonnaise and the piano. (: Hope this helps!
One society living under one government is a State.
2. Crusaders murdered Jews. Muslims, and Christians during their journey.