When designing a history curriculum, a comprehensive and fair presentation of the history and culture of various countries is an important way to promote students' understanding of global diversity, cultivate critical thinking, and enhance international understanding. Focusing on emphasizing only one's own country's achievements while ignoring or belittling the history and culture of other countries may lead to the following problems: 1. **Bias and misunderstanding**: Students may form misunderstandings or prejudices about other countries and cultures, affecting their international vision and cross-cultural communication skills. 2. **Historical one-sidedness**: Ignoring the contributions of other countries will lead to incomplete historical cognition and an inability to fully understand the context of global historical development. 3. **Social and moral responsibility**: Educators have the responsibility to cultivate students with a global vision and an inclusive mindset. Biased curriculum design may violate this educational goal. 4. **Limited critical thinking**: A comprehensive history education can cultivate students' ability to analyze and evaluate different viewpoints. One-sided information may limit their critical thinking development. If the goal is to strengthen national identity, the following methods can be considered while maintaining fairness and comprehensiveness of the curriculum: - **Emphasis on the role of the country in global history**: Introduce the contribution of one's own country to important historical events, but at the same time discuss them in a global context. - **Comparative Perspective Teaching**: Help students understand the mutual influence and connection between countries by comparing the performance of different countries in similar historical periods. - **Use of Diverse Resources**: Use historical materials from different countries and cultures to ensure that students are exposed to diverse perspectives and information. In this way, students can enhance their understanding and identity of their own history, and cultivate their respect and understanding of global diversity, thus achieving a more balanced and effective history education.