Marcus Livius Drusus was a Roman politician and tribune in the late 2nd century BCE. He is best known for his attempts to reform the Roman Republic, particularly through land redistribution and the extension of citizenship to the Italian allies. His efforts aimed to address social inequalities and improve the lives of the lower classes. Drusus's reforms faced strong opposition from the Senate and other political factions, leading to his eventual assassination around 91 BCE. His death contributed to the growing tensions between Rome and its Italian allies, ultimately resulting in the Social War, a conflict over citizenship and rights.