What was the first multi country space habitat for long term occupation?

The first multi-country space habitat for long-term occupation is the International Space Station (ISS). Launched in 1998, it is a collaborative project involving multiple space agencies, including NASA, Roscosmos, ESA, JAXA, and CSA. The ISS serves as a microgravity research laboratory where scientific research is conducted across various disciplines. It has been continuously inhabited since November 2000, facilitating international cooperation in space exploration.