Emily came to see her advisor about doing a research study for her ph. d. dissertation. "what are you going to investigate? " he asked. "i believe that drinking orange juice before an iq test will raise a person's score," she said.

Emily's answer constitutes a "hypothesis".

A hypothesis, in a scientific context, is a testable proclamation about the connection between at least two factors or a proposed clarification for some watched marvel. In a scientific experiment or study, the theory is a concise summation of the scientist's forecast of the examination's discoveries, which might be bolstered or not by the result. Hypothesis is the center of the logical strategy.

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.