Did greese achieve its independence from the Austrian empire in 1830?

Greece did not achieve its independence from the Austrian Empire in 1830; rather, it gained independence from the Ottoman Empire. The Greek War of Independence began in 1821, and after several years of conflict and international intervention, Greece was recognized as an independent state in 1830 through the Treaty of London. Austria was not directly involved in the conflict regarding Greek independence, as it was focused on its own interests in Central Europe.