Answer:
Explanati Ports have long played a vital role in the international transport system, but have become increasingly important since the second half of the twentieth century with the rapid globalization of the world economy and expansion of world trade. hope this helps<3
B. People started batering goods after coins became worthless. Hopes this helps :)
<span>In the Middle Ages, there were three heirs of Roman civilization. These three included: Byzantium, the Islamic Empire, and the territories of western Europe. The Byzantine Empire, founded by Emporor Constantine, was the first of these to inherit Roman civilization.</span>