1. Historical investigation topics: origins of WWI, Russia and Soviet Union, Vietnam conflict, reunification of Germany
2. Exam structure: 45 minutes per question, one question to be answered
3. Key sources: speeches from Bush and von Weizsäcker on German unity, interview extracts on Vietnam war opposition
4. Documented conflicts: Vietnam war, East Germany, WWI origins, Russian revolution
5. Thematic focus: social impact, political decisions, and national unity issues
6. Analysis criteria: support, interpretation, and historical evidence usage