What effect did germany's unrestricted submarine warfare against britain have on the balance of power in world war i?

Which of the following groups of sentences most accurately describes the cuban missile crisis?

Poem: the barn how does frankau try to strip the glamour from war? what might the date of the poem have to do with the feelings it expressed ?

Which distinctive feature of the notre dame cathedral allowed it to accommodate its large stained glass windows? a. its barrel vaults b. its flying buttresses c. its quadrant arches d.its square bays