The first three of these postwar amendments the most radical and most rapid social and political change in American history the abolition of slavery (13 th) and the granting of equal citizenship (14 th) and voting rights (15 th) to former slaves all within a period of 5 years.
"<span> C. Nations often seek to protect their firms and their workers from competition" is the correct answer. Nations don't want cheaper goods coming in that will reduce jobs and GDP. </span>