Why do you think Hoar referenced the Chinese inventing gunpowder, paper, and the compass?

According to nationalists, a nation-states government should be a. controlled by european monarchs b. led by an appointment president c. voted on by european parliaments d. chosen by that nation-state

Profits are maximized when marginal revenue and marginal costs are a. set c. equal b. less than market price d. greater than market price

Why did european nations face financial challenges after world war 1?