The river and deserts provided natural defenses for the Egyptians. The Nile River has a marshy delta. As a result, Egyptians could not build a port at the mouth of the Nile. This made it difficult for invaders to reach Egyptian settlements along the river.
The railroad boosted the economic status of the USA the transportation of raw materials and manufactured good to and from industries became faster and easier after the completion of the railroad
Many state constitutions expanded suffrage, which is the right to vote in political elections.
