How has the UN changed since it was founded?

Since its founding in 1945, the United Nations has evolved significantly in response to global challenges. Initially focused on maintaining peace and security, the UN has expanded its mandate to include issues like human rights, sustainable development, and climate change. It has also adapted its structure, increasing the number of member states from 51 to 193 and establishing various specialized agencies to address a wider range of global issues. Additionally, the UN has become more engaged in peacekeeping and humanitarian efforts, reflecting the complexities of modern conflicts and global interdependence.