Complex sentence: Foraker came to differ with President Theodore Roosevelt over railroad regulation and political patronage, but their largest difference was over the Brownsville Affair, in which black soldiers had been accused of terrorizing a Texas town, and Roosevelt had dismissed the entire battalion.
Split into simpler sentences: Foraker came to differ with President Theodore Roosevelt over railroad regulation and political patronage. Their largest disagreement was over the Brownsville Affair, in which black soldiers had been accused of terrorizing a Texas town, and Roosevelt had dismissed the entire battalion.