In order to put this quick history in a broader context, you may want to mention that Latvia was part of Russian empire for 200 years before gaining independence around 1920. Soviets occupied Latvia 20 years later in 1940.
Statement about "Nazi war machine crushing Latvia" is not entirely accurate - on the contrary, Latvia was part of Nazi war machine: e.g. https://en.wikipedia.org/wiki/Latvian_Legion_Day