Simplify the following text for a Grade 8 native English-speaking person.
Original: During that same year , the Greek cities in Sicily were induced to revolt against Roman political control , while the Macedonian king , Philip V , pledged his support to Hannibal â `` thus initiating the First Macedonian War against Rome .
Simplified: The Macedonian king , Philip V supported Hannibal . This started the First Macedonian War against Rome .