What measures were used by the Roman Empire to create cultural unity and strengthen the Empire? building an extensive network of roads establishing the system of feudalism colonizing North America granting citizenship to people in outlying areas

Correct answer is:

building an extensive network of roads

granting citizenship to people in outlying areas

Explanation:

First option is correct as throughout the Empire Romans built a large number of roads. The whole Empire was connected with these networks of road.

During the Empire citizenship was granted practically to everyone who lived in the borders of the Empire. Similar culture, religion and language were used across the Empire.

Feudalism was established in the Middle Ages after the fall of Roman Empire, therefore this option is false.

Colonization of North America started at the end of 15th and beginning of 16th Century.

answer; i believe that one of the correct answers is preventing human development;