Which invention allowed the greatest personal freedom of travel?

According to thomas hobbes concept of the social contract, what do people exchange for the protection by the government?

Which of the following american companies had a monopoly in the late 1800s?

What does the timeline above show about the consequences of the persian wars? a. each city-state of greece had equal influence after the wars. b. athens and sparta continued attacking persia after the wars had ended. c. persia continued to dominate greece for years after the wars. d. the alliance between athens and sparta ended shortly after the wars.