What did you learn about American dependence on foreign oil?

The United States was too dependent on oil produced in other countries.

Explanation:

One good example of this US dependency of oil produced in foreign countries was the oil crisis in 1973 and 1979. The United States faced gas shortages in those years because the OPEC disrupted oil supplies. OPEC stands for Organization of Petroleum Exporting Countries. In those years, American citizens had to withstand long lines in gas stations to get some gasoline.

The preamble is just the beginning to the constitution and introduces some of the core values America was built on.

Explanation:

The preamble goes as follows, "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."