Which of these was a factor in the u. s. entry in world war i? a) the halt of the german army b) the sinking of the lusitania c) the signing of a peace agreement d) the death of the heir to the italian throne

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.

the communist manifesto is an 1848 political pamphlet by the german near the end of the manifesto, the authors call for a "forcible overthrow of all existing social conditions",  ..