There ethnic was wavered after most of them were wiped out
When to talk about the plate tectonic it sound the same as our continents as we see in the ancient days you were having two continents which is laurasia and Gondwanaland
Answer:
The radioactive isotope content of a rock can be used to identify the rocks age.
Sudan is often not included as a country of the Sub-Saharan Region because a portion of the Sahara Desert is within the country. Also in terms of demographics, history, and culture Sudan is usually considered part of North Africa and the broader "Arab World."