Complex sentence: Hjalmar Petersen (January 2nd, 1890--March 29th, 1968) was an American Politican who was born in Denmark and moved to Minnesota as a child.
Split into simpler sentences: Hjalmar Petersen (January 2nd, 1890 to March 29th, 1968). Hjalmar Peteresen was born in Denmark and moved to Minnesota as a child.