How was the Roman colosseum's seat arranged?

Inside, the Colosseum had seating for more than 50,000 spectators, who may have been arranged according to social ranking but were most likely packed into the space like sardines in a can (judging by evidence from the seating at other Roman amphitheaters).

Seats within the Colosseum were arranged in a tiered manner, which reflected ancient Roman hierarchy.

Explanation: These tiers included assigned seating arrangements for senators, non-senatorial noble citizens, soldiers, foreign dignitaries, scholars, and so on.

sumerians were responsible.