Which contribution did jonas salk make to science in the 1950s

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

What was the underlying cause of the cold war?

Which of these statements describes the relationship between urbanization and the divison of labor during the bronze age?