During the "free banking" era,
a. only the u. s. treasury could issue currency.
b. value and denominations were standard across the nation.
c. the number of state chartered banks stayed the same.
d. all banks were able to issue currency.

Why was the sixteenth amendment important to woodrow wilson’s efforts to regulate the economy? a) the sixteenth amendment lowered interest rates charged by banks. b) the sixteenth amendment allowed congress to levy an income tax c) the sixteenth amendment lowered tariffs on imported goods d) the sixteenth amendment allowed congress to break up monopolies