Yes, it is true that the technology and factory assembly lines of the 1900s changed American life forever, since these turned America into an industrial cornerstone of the world, which set its place in the 20th century.
A topic for an astronomy paper can be the life cycle of a star.
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.
