The answer is number a is true
He greatly improved existing stream engines for use in factories
Answer:
The term "Pax Romana," which literally means "Roman peace," refers to the time period from 27 B.C.E. to 180 C.E. in the Roman Empire. This 200-year period saw unprecedented peace and economic prosperity throughout the Empire, which spanned from England in the north to Morocco in the south and Iraq in the east. During the Pax Romana, the Roman Empire reached its peak in terms of land area, and its population swelled to an estimated 70 million people. Nevertheless, Rome's citizens were relatively secure, and the government generally maintained law, order, and stability. The Pax Romana began when Octavian became the leader of the Roman Empire.
