Complex sentence: After the end of the Civil War, Pomutz was appointed Consul of the United States in Saint Petersburg, Imperial Russia (1866), then promoted to "General Consul" in 1874; he may have been involved in the negotiations for the Alaska Purchase.
Split into simpler sentences: After the end of the Civil War, Pomutz was appointed Consul of the United States in Saint Petersburg, Russia (1866), then promoted to "General Consul" in 1874. He may have been involved in the negotiations for the Alaska Purchase.