Complex sentence: The Tver Uprising of 1327 (Russian: Тверское восстание) was the first major uprising against the Mongol invasion of Rus' by the people of Vladimir, and was brutally suppressed by the joint efforts of the Golden Horde, Muscovy and Suzdal.
Split into simpler sentences: The Tver Uprising of 1327 (Russian: Тверское восстание) was the first major uprising against the Mongol invasion of Rus' by the people of Vladimir. It was brutally suppressed by the joint efforts of the Golden Horde, Muscovy and Suzdal.