The framers of the US Constitution wrote the Preamble
a. to establish the sovereignty of individual states.
b. to introduce the core ideas of the new government.
c. to define the roles of domestic and foreign policies.
d. to enforce the powers of the confederation government.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation: