Complex sentence: In the summer of 1865, President Andrew Johnson sent Schurz through the South to study conditions; they then quarrelled because Schurz supported General Slocum's order forbidding the organization of militia in Mississippi.
Split into simpler sentences: In the summer of 1865, President Andrew Johnson sent Schurz through the South to study conditions. They then quarrelled because Schurz supported General Slocum's order forbidding the organization of militia in Mississippi.