It reflects economic and social changes by having people of different status interacting. It also shows a woman in the picture who wouldn't be in there if not to show changes in the social situation.
Our ancestors either left Africa from Ethiopia/Djibouti across the strait to Arabia, or via Egypt to Israel. From there they went, through Iran to India, then down through South-East Asia to New Guinea, which they reached by about 40,000 years ago. Once in New Guinea, they more or less settled and were immobilised by all the other tribes around them. That's why the New Guineans resemble Africans so much.
<span>They also hooked south to Australia which they reached by about 47,000 years ago. </span>
<span>They also went from India north-east into China. From China they went up over the Bering Straits and down to the end of the Americas. They also went east from China across the Pacific Ocean, curling down from Tahita and Hawaii, reaching New Zealand as the last place on earth to be reached by humans, only about 500 years ago. </span><span>And they also hooked north-west into Europe. (hope this helped cx)</span>
<span>The western German tribes consisted of the Marcomanni, Alamanni, Franks, Angles, and Saxons, while the Eastern tribes north of the Danube consisted of the Vandals, Gepids, Ostrogoths, and Visigoths. The Alans, Burgundians, and Lombards are less easy to define.</span>
They are an example of elephants
D. By posting a well trained army throughout the empire