Assessing oppurtunity cost involves ? ?

How long ago was the fall of rome (in years)

By june 1943, the allies had regained control of north america. what was the advantage of controlling this region? what would you describe the axis's situation in europe in 1942? how might the axis have benefited by gaining control of great britain by 1942? the last questions of my quiz 10 points more than normal answer it honestly so i can get a good grade < 3

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