What 2 countries are closest friends on earth?

Determining the "closest friends" among countries can be subjective and varies based on political, cultural, historical, and economic relationships. However, two countries often cited as having a particularly close friendship are the United States and Canada. They share a long border, strong trade ties, cultural exchanges, and robust diplomatic relations. Another example could be Australia and New Zealand, which have deep cultural ties, similar political systems, and collaborate closely on various issues. Ultimately, “friendship” between countries can be defined in many ways, and the closest relationships can differ depending on the context considered.