What concept is illustrated by the fact that congress has the power to introduce and pass laws, and the president has the responsibility to enforce all federal laws? a. federalism b. separation of powers c. checks and balances d. judicial review

C separation of powers.

Explanation:

Federalism is where the power for state and the federal government is divided. Separation of powers is the division of state and government powers in order to limit one side from the concentration of power. Checks and balances is where the state and government has regulations and certain powers specific to it's branch to prevent complete dominance. Judicial review is the supreme court declaring a legislation constitutional v. unconstitutional.  

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:

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