What Europe nations ceased to exist after world war 1?

After World War I, several European nations ceased to exist or underwent significant changes in their political structure. The Austro-Hungarian Empire dissolved, leading to the emergence of new countries such as Austria, Hungary, Czechoslovakia, and Yugoslavia. The Ottoman Empire also fragmented, giving rise to modern Turkey and several other states in the Middle East. Additionally, the Russian Empire collapsed, resulting in the creation of several independent nations, including Finland, Estonia, Latvia, and Lithuania.