What is the purpose of the phrase "We the People of the United States in the Constitution's preamble?
We the People of the United States, in order to form a
more perfect Union, establish Justice, insure domestic
Tranquility, provide for the common defence, promote the
general Welfare, and secure the Blessings of Liberty to
ourselves and our Posterity, do ordain and establish this
Constitution for the United States of America.
-U. S. Constitution, Preamble?
TU. S. Constitution, Preamble, June 21, 1788, National Archives and Records Administration
O A. To guarantee that the American people will get to vote on all new
laws
B. To explain that the U. S. government has a duty to protect its
people
O c. To show that the government must respect people's natural rights
O D. To show that the people hold all political power in the country

We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.

So I would say the answer is B. To explain that the U.S. government has a duty to protect its  people.

american troops were forced to withdraw following deadly bombings.

explanation:

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: