Complete the following sentence: The plebeian tribunes (the representatives of the plebeians) and the Plebeian Council (the assembly of the plebeians) at times clashed with the Senate over the mentioned reforms and over the power relationship between the plebeian institutions and the Senate. Optimates among the senators spearheaded the senatorial opposition.<unk> Optimates among the senators spearheaded the senatorial opposition.<unk> Optimates among the senators spearheaded the senatorial opposition. •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 87 BC), Sulla's second civil war (82<unk>81 BC), the Sertorian War (83<unk>72 BC), Lepidus' rebellion (77 BC), Caesar's Civil War (49<unk>45 BC), the post-Caesarian civil war (44<unk>43 BC), the
42 BC) and the Sicilian revolt (44<unk>36 BC).