What role did emperors play in gladiator battles

an ancient professional fighter who specialised with particular weapons and armour. They fought before the public in organised games held in large purpose-built arenas

Explanation:

it further strained relations between the north and the south and convinced

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.