Complex sentence: The Omaha North High School Vikings football team won their first state championship in 1929, and again in 1948,1956,1961,1967,2013,2014 and 2017.
Split into simpler sentences: The Omaha North High School Vikings football team has enjoyed success, both in the past as well as recently. They won their first state championship in 1929, and again in 1948,1956,1961,1967,2013,2014 and 2017.