There is indeed some selective narration of events and facts in history textbooks on the Vietnam War, which is particularly evident in different countries and cultural contexts. Here are some aspects that may be ignored or simplified: 1. **Complexity of the war**: Many textbooks may not fully present the multiple dimensions of the Vietnam War, including the political turmoil within Vietnam, international relations in the context of the Cold War, and the interweaving of interests of different countries. 2. **Civilian impact**: The impact of the war on Vietnamese civilians, such as casualties, displacement, and psychological trauma, is often simplified or ignored. Many books may focus more on military actions and lack a deep description of civilian life. 3. **Anti-war movement**: In textbooks in some countries, the impact and importance of the anti-war movement in Vietnam may be underestimated because it is closely related to domestic political and social movements. 4. **Differences in perspectives**: Different countries and regions may have different narratives. For example, American textbooks may focus more on the "freedom and democracy" perspective, while Vietnamese textbooks may emphasize national independence and the anti-imperialist struggle. 5. **Aftermath and Recovery**: The reconstruction after the war, the economic and social changes in Vietnam, may also be skipped or not detailed enough in some textbooks. These factors will affect the reader's understanding of history. Therefore, it is very important to refer to multiple sources and analyze different perspectives when studying the Vietnam War.