Complex sentence: He took a prominent part in the anti-slavery and Reconstruction measures during and after the Civil War, in tariff legislation, and in the establishment of a fish commission, and the inauguration of daily weather reports to be provided by the federal government.
Split into simpler sentences: He took a prominent part in passage of the anti-slavery and Reconstruction measures during and after the Civil War, in tariff legislation, and in the establishment of a fish commission. He also initiated daily weather reports to be provided by the federal government.