How was the period when Rome ruled most of Europe different from the Middle Ages?

Rome was headed by a King during the early years but changed to having consuls to govern them. ... The Senate became powerful people that make decisions in Rome. The middle age is governed by a monarchy. A lot of innovations and agricultural improvements had come in after the change.

Explanation:

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.