Complex sentence: Believing he could earn money distributing telephone service, he formed a partnership with the postmaster of Bienville, Louisiana, Ben Cheen, and in the spring of 1903 they completed 15 miles of telephone line construction from Bienville to Arcadia, Louisiana.
Split into simpler sentences: Believing he could earn money distributing telephone service, he formed a partnership with the postmaster of Bienville, Louisiana, Ben Cheen. In the spring of 1903 they completed 15 miles of telephone line construction from Bienville to Arcadia, Louisiana.