Q: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
The Roman Kingdom , also referred to as the Roman monarchy , or the regal period of ancient Rome , was the earliest period of Roman history , when the city and its territory were ruled by kings .
A:
The Roman Kingdom was the monarchical government of the city of Rome and its territories .