B.
<span>to carry out the laws passed by Congress</span>
Try asking one question at a time
Tet offensive was the battle that showed that the war in Vietnam was not being won as easily as it was being portrayed. It was one of the largest millitary campaigns of the Vietnam War, it started in 1968, by forces of the Viet Cong and North Vietnamese People´s army of Vietnam against the forces of the South Vietnamese Army of the Republic of Vietnam and the United States Armed Forces, and their allies.
This offensive was the largest military operation conducted by either side up to that point in the war.
The offensive had a huge impact on the U.S government and shocked the US public. Soon, the American public support declined and the US started a series of negotiations to end war.
An enormous question.
The Holocaust, which seems to have been the result of German Chancellor's "final solution" to the "Jewish Problem". Kill them all, by the cheapest means possible. And, to do that, the chancellor had to "get his supporters to buy his message". That was done by nationwide indoctrination, anything from banning "Jew physics" (a blunder of a ban, because Jews, Professors Einstein and Lisa Meitner to name but two associated with the Nobel prize in physics, played important roles in developing nuclear weapons), through to indoctination of the dreaded "Hitler youth", via "krystalnacht" and the mass transportation of as many Jews as could be tranported to death camps "hidden" in eastern europe near the USSR border.
And this is only part of the start to the answer.
It may well be impossible to do this subject justice anywhere ...
