The document that institutionalizes
American ideas is the

The document that institutionalizes  American ideas is "the Declaration of Independence".

Explanation:

The Declaration of Independence (DoI) and the Constitution are documentation that provide the idealistic pillars for the United States' democratically elected government.The independence or DoI, provides a framework for the principles of popular sovereignty, the notion that government is needed to serve the public who elect a leader to convey their desire.Whereas the Constitution of U.S illustrates its government program's blueprint, which seeks to equalize freedom of the individual with law and order.

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:

some american cities felt workers were being oppressed by business monopolies