Who paid for the International Space Station?

The International Space Station (ISS) is a collaborative project funded by multiple space agencies, primarily NASA (United States), Roscosmos (Russia), ESA (European Space Agency), JAXA (Japan), and CSA (Canada). Each agency contributes funding, resources, and technology based on their respective agreements and participation levels. Overall, the costs are shared among the partner nations, with NASA covering a significant portion of the expenses.