Answer:
The Definition of Bloodletting
The surgical removal of some of a patient's blood for therapeutic purposes, or it could mean
The violent killing and wounding of people during a war or conflict.
Invasions of people--many of the groups came as military and fought the Romans as invading forces.
Counterclaim--they were migration patterns as they were attempting to gain access to an empire with advanced trade and education. Migrating to the Roman Empire gave a person or group with extra resources.
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