Who was the 30th president of the united states?

Calvin Coolidge

Explanation:

Calvin Coolidge was the 30th president of the United States.

His time as president began in 1923 and ended in 1929.

the correct answers are: 1) lay and collect taxes and duties; 2) pay debts; 5) borrow money;   6) regulate commerce with foreign nations.

article 1, section 8. refers to the powers of congress. according to the united states constitution: “the congress shall have the power to lay and collect taxes, duties, imposts, and excises, to pay the debts and provide for the common defense and general welfare of the united states.”

c. free trade can lead to low pay for workers in poorer countries.