Complex sentence: On the Seward peninsula at the Bering Strait he met the Swedes Erik Lindblom and John Brynteson, and the three formed the profitable mining company "Pioneer Mining Co." They also founded the city Nome, where they later made a big find of gold.
Split into simpler sentences: On the Seward peninsula at the Bering Strait he met the Swedes Erik Lindblom and John Brynteson. The three partners also founded the city of Nome, where they later made a big find of gold.