Which of the following examples of the potential of the greatest political and cultural unity?
1. The establishment of a universal global government with representatives from all nations working together to address international issues.
2. The promotion of multiculturalism and diversity within society, leading to greater understanding and acceptance of different cultures and beliefs.
3. The formation of a worldwide alliance to combat climate change and protect the environment for future generations.
4. The development of a united front against terrorism and extremism, with countries working together to promote peace and security worldwide.