What caused the United States to finally join the war in 1917?

What stalled germany's initial invasion into france in 1914

Which event transfer power from the west to the east? a. the development of a unique code of law for the byzantine empire b. the shift of the roman empire’s capital from rome to constantinople c. the entry of christian priests and missionaries into constantinople d. constantine i’s commemoration as the first byzantine emperor reset next

Richard nixon was born in california. fact or opinion