Which european country entered world war i as part of the central powers but later switch sides to the allies in 1915

This essay was published in 1788 in response to an article that argued against the ratification of the u.s. constitution. he tells you that the president will have more power than many in princes in according to the essay, what is the effect of dividing control of the military power of the united states between congress and the president?

Which are in millennium development goals check all that apply

In 1819, what did the united states obtain from spain for $5 million?