Complex sentence: In 1958, Caouette broke with Even and Côté-Mercier and the increasingly hostile attitude of the Union des électeurs towards elections and party politics and founded the Ralliement des créditistes which won recognition as the Quebec wing of the national Social Credit party.
Split into simpler sentences: In 1958, Caouette disagreed with Even, Côté-Mercier and the increasingly hostile attitude of the Union des électeurs towards elections and party politics. He founded the Ralliement des créditistes which won recognition as the Quebec wing of the national Social Credit party.