Complex sentence: In 1940, following the secret provisions of the Molotov-Ribbentrop Pact, the USSR forces Romania to cede Bessarabia and integrates Tiraspol, until then part of the Ukrainian SSR, into the newly-formed Moldavian SSR.
Split into simpler sentences: In 1940, following the secret provisions of the Molotov-Ribbentrop Pact, the USSR forced Romania to cede Bessarabia. It integrated Tiraspol, until then part of the Ukrainian SSR, into the newly-formed Moldavian SSR.