Why did such a large number of international leaders?

Your question seems to be incomplete, but I'm guessing you're asking about why large numbers of international leaders attended a particular event? If you're referring to recent events like Queen Elizabeth II's funeral or the G20 summit, such gatherings attract many world leaders because they serve multiple purposes: Diplomatic protocol - Showing respect for host nations or significant global figures Bilateral meetings - Rare opportunities for face-to-face discussions on important issues Global visibility - Leaders gain international media coverage Multilateral cooperation - Addressing global challenges like climate change or economic crisesThese events function as "diplomatic marketplaces" where relationships are built and important agreements are often reached on the sidelines.

If you're asking about why so many international leaders might attend a specific event (maybe you're thinking of a recent UN climate conference or something similar), it's typically because the issue being discussed requires global cooperation. No single country can solve problems like pandemics, climate change, or international terrorism alone. Also, with today's interconnected world, decisions made in one country often have ripple effects globally. Plus, there's the aspect of soft power - leaders want to project influence and build alliances that benefit their countries economically and politically. The more significant the event, the more leaders feel compelled to attend to ensure their nation's interests are represented.