Complex sentence: From 1890 to 1918 the newspaper was published and edited by jurist Hjalmar Løken, and during his period it was an independent political newspaper, supporting the Liberal Party, and playing a significant role in the political debate.
Split into simpler sentences: From 1890 to 1918 it was published and edited by jurist Hjalmar Løken. During his period it was an independent political newspaper, supporting the Liberal Party, and playing a significant role in the political debate.