Answer:
East Asia and Mediterranean Sea
The military leader that ended the slave revolt led by Spartacus was Crassus - Marcus Licinius Crassus - was a Roman General and politician. He helped to transform the Roman Republic into the Roman Empire.
At the start the Roman Republic did not care much for the rebellion led by Spartacus when they noticed that it was unstoppable, the Senate gave the task to end it to Crassus.
Would help if there was a picture
I think maybe railroads or Gatling gun