Complex sentence: After the Russian Revolution of 1917, he published several notable articles on its causes and joined the White movement, serving as a minister in the governments of Anton Denikin and Pyotr Wrangel.
Split into simpler sentences: After the Russian Revolution of 1917, he published several striking articles on its causes and joined the White movement. He served as a minister in the governments of Anton Denikin and Pyotr Wrangel.