The US Constitution contains which two of the following concepts?

The correct two items:

limited government

protection for individual liberties

Those two ideas are tied together.  The United States was founded on the idea of protecting individual liberties, which the American colonists felt were being infringed by Great Britain's government.  In the Declaration of Independence, that purpose for forming the new nation was stated -- that to secure the rights of life, liberty, and the pursuit of happiness, a government is established by the consent of the governed.

So, the Constitution of the United States sought to protect individual rights.  The closing words of the Constitution's Preamble assert that the Constitution was being established to "promote the general Welfare and secure the Blessings of Liberty to ourselves and our Posterity."   The Constitution then follows, outlining and limiting what the powers of the government would be, so that the government always was existing for the sake of "the general welfare" and "the blessings of liberty."  The founders did not want the government to become self-serving or achieve a level of power that allowed it to trample on individual liberties.

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

when studying cause and effect, historians usually group the causes into different categories. for example, cultural causes reflect how a society’s literature and art convey the way the society saw itself in relation to the rest of the world. another resource that historians use to understand society is pop culture, which tells them the trends and ideas that are preferred by the common people. when studying cause and effect, it’s important to remember multiple causation, or the idea that an effect could have several causes and vice versa.  

the correct option is “cultural causes” since art and literature are related to the culture of a place. culture is determined by literature, art, music.

the correct option is “pop culture” since it reflects the likes and ideas of common people whereas the rest of the options do not focus on common people.  

the correct option is “multiple causation” since it refers to the idea that events are caused by multiple reasons, not just a single one.