How was the development of Rome similar to the growth of the United States?

The Romans established a form of government — a republic — that was copied by countries for centuries In fact, the government of the United States is based partly on Rome's model. The ladder to political power in the Roman Senate was different for the wealthy patricians than for the lower-class plebeians.

Explanation:

c. in the address bar

one context clue that me find the meaning of luxuriance was that the base word of luxuriance is luxury, so i think that luxuriance means something that is luxury, or something luxurious.