| A | B |
| Allied Powers | alliance between Britain and France, and later the U.S. and other countries, that fought against the Axis Powers |
| Axis Powers | Military alliance formed by Italy and gremany in 1936; later joined by Japan and other countries. |
| Holocaust | The Nazis' killing of some 6 million Jews and about 3 million other people |
| Manhattan Project | Secret Allied project begun in 1942 to develop an atomic bomb |
| Munich Conference | Meeting between British, French, and German leaders in which Germany was given control of the Sudetenland in exchange for German leader Adolph Hitler's promise to make no more claims on European territory |
| Lend-Lease Act | Law that allowed the United States to loan weapons and other war supplies to Britain and the Soviet Union |
| Blitzkrieg | "Lighting War"; type of fast-moving warfare used by German forces against Poland in 1939 |
| Genocide | Deliberate murder of an entire people |
| Fascism | Political theory that calls for a strong government headed by one individual and in which the state is more important than the individual |
| non-aggression pact | Agreement between nations not to attack each other |