They removed existing rulers from the conquered lands to ensure they had direct control of their enemies' trade routes. They forced all the people they conquered to trade directly with them, increasing their wealth from the sale of additional goods. They took all conquered people as prisoners and forced them to work as slaves on public works projects. The tribute demanded from conquered peoples provided warriors for defense, as well as food and resources for their own people.
Those phrases are found in the Preamble to the Constitution. Hope I helped! Here's the excerpt: "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 ..."
Answer:
Total revenue equals total Expenditure in a market where transaction costs are zero. This is because what consumer pays is received in total by the supplier. That is consumers pay price quantity which is total Expenditure. Hence total Expenditure equals total revenue.
