Modern U.S. History

I need you to write clear definition of each one below:

NOTE: Make sure all the definitions will be about Modern U.S. History.

1. Fascism
2. D-Day
3. United Nations
4. The Holocaust
5. The Manhattan Project
6. The Cold War
7. The Marshall Plan
8. The Berlin Wall
9. McCarthyism
10. The Cuban Missile Crisis
11. The Great Society
12. Brown v. Board of Education
13. The Tet Offensive
14. I Have a Dream
15. The Watergate Scandal
16. The Iran-Hostage Crisis
17. The New World Order
18. Korean War
19. Vietnam War
20. Appeasement
21. Winston Churchill
22. December 7, 1941
23. Japanese internment Camps
24. Hiroshima/Nagasaki
25. Spheres of Influence
26. George Kennan
27. The Military-Industnal Complex
28. The Truman Doctrine
29. NATO
30. The DMZ
31. Nikita Khrushchev
32. The Bay of Pigs
33. Fidel Castro
34. The Fair Deal
35. The New Fronter
36. The Second Red Scare
37. Rosa Parks
38. The Domino Theony
39. Vietnamization
40. The Peace Corps
41. Martin Luther King
42. Betty Friedan
43. The Camp David Accords
44. 9/11
45. Pre-emptive War
46. The Monica Lewinsky Scandal
47. Presidential Election of 2000
48. Terrorism
49. Trickle-Down Economics