Answer:
Why do historians believe that cities in the Indus River valley had organized governments? Historians learned this through reading ancient texts. Historians believe this because the cities were built on a river.Explanation:
Australia is smallest, Eurasia biggest, Madagascar largest island
Alexandria was a center of Hellenistic culture because it was founded by Alexander the Great of Macedon prior to his death. Following his death, Ptolemy took control of what was more or less Ancient Egypt and designated Alexandria as its capital. Despite its location in Egypt, Alexandria was laid out with a Grecian city plan (grid-like with straight roads). Additionally, it contained things like a theatre, library, and museum which were Greek in origin, not Egyptian. Hellenistic stems from the world Hellas which means Greece and thus Hellenistic features are predominately Greek and focus on arts, knowledge, and trade within the Mediterranean world.
The earth was formed at approximately 4.5 Billion BC
After the independence of many African countries (not all, for example, Ethiopia was never really colonized), the countries struggled both politically and economically - even more than before the independence.
A huge reason for that is that the countries were not formed along the ethnic lines, but instead they were divided by the Europeans among themselves, so when the independence was gained, there were many internal conflicts between the ethnicities and religions.
One example for this was the Rwandan Genocide - a result of the conflict between the Hutu and the Tutsi.
