How did the actions of tiberius gracchus change the roman republic? 1.he angered the senate by proposing that rome divide public lands among the returning military and their families. 2.he replaced the elected consuls and the senate with an empire that could be inherited by members of the ruler's family. 3.he angered the senate by convincing men to serve in wars by promising them land and citizenship. 4.he restructured the city's politics and strengthened the senate's power.3