What are three ways that the US constitution protects economic freedom?

The Constitution contains a number of provisions designed to protect economic liberty, including the contracts clause, the takings clause, the Privileges and Immunities Clause, the Fifth and Fourteenth Amendment Due Process Clauses, and others.

Feel free to take 3 points into consideration. :)

fir trees are found in areas with cooler climates. fir trees have needles for leaves and remain green year-round.