Why were there only two superpowers left after 1954?

After 1954, the geopolitical landscape was dominated by two superpowers: the United States and the Soviet Union. This resulted from the aftermath of World War II, where both nations emerged with significant military strength and economic influence, while European powers were weakened. The ideological divide of capitalism versus communism further solidified their roles, leading to the Cold War. Other nations, while influential, lacked the same level of global reach and military capability, solidifying the U.S. and USSR as the primary superpowers.