Complex sentence: The BNR was recognized by several Central Powers and former Russian countries, but not by the majority of the international community, and ceased to exist when Belarus was taken under Soviet control and the Belorussian SSR was founded in 1919.
Split into simpler sentences: The BNR was recognized by several Central Powers and former Russian countries, but not by the majority of the international community. It ceased to exist when Belarus was taken under Soviet control and the Belorussian SSR was founded in 1919.