What difficulties did Hannibal lucius cornelius sulla and sparatacus cause for rome?

Hannibal Barca posed a significant challenge to Rome during the Second Punic War (218-201 BCE) by leading a military campaign that included his famous crossing of the Alps, resulting in several devastating defeats for Roman forces. Lucius Cornelius Sulla created turmoil in Rome through his conflict with Gaius Marius, leading to a series of civil wars that weakened the Republic and set a precedent for future power struggles. Spartacus, as the leader of a major slave revolt from 73-71 BCE, severely threatened Roman authority and exposed vulnerabilities in the Roman social and military systems. Together, these figures contributed to a period of instability that foreshadowed the decline of the Roman Republic.