When did Zimbabwe gain independence which party has ruled since then and is its leader?

Zimbabwe gained independence from the United Kingdom on April 18, 1980.

Which party has ruled since then?

The Zimbabwe African National Union – Patriotic Front (ZANU–PF) has been the ruling party of Zimbabwe since independence.

Who is the leader of Zimbabwe?

The current leader of Zimbabwe is President Emmerson Mnangagwa, who has been in power since November 2017.