What central issue sparked warfare that eventually led to the decline of rome?

The central issue that sparked warfare and contributed to the decline of Rome was the struggle for power and control among various factions within the empire, exacerbated by economic instability and external pressures from invading tribes. As the Roman legions faced challenges in defending the vast borders, internal conflicts, including civil wars and political corruption, weakened the central authority. This fragmentation of power, combined with relentless invasions from groups such as the Visigoths and Vandals, ultimately led to the empire's disintegration. The cumulative effect of these conflicts eroded Rome's ability to govern effectively, marking the beginning of its decline.