Wrong. Soviet Union was the first country which publicly recognised Latvia's independence back in 1920s. Yep, then they took it back in 1940s.

To nitpick, the Estonian and Latvian Nations have existed for almost 1000 years.

The Nation-states are not that old, but there are many young nation-states in Europe.

And, Estonia and Latvia existed as independent nations in 1918-1940 (when they were left to the Soviet sphere of influence when Hitler and Stalin split up their spoils.)