The correct answer to this open question is the following.
Although the question does not include options, we can comment on the following.
A key similarity in the policies of the rulers of African states such as Ethiopia in the period circa 1200–1450 was that some African states were capable to overcome geographical barriers and other internal issues to establish trade and diplomatic relationships with other states in Africa, Asia, and Europe.
In the case of Ethiopia, the ruler of Italy received important Ethiopian diplomats that visited Naples in 1450. The Emperor of Ethiopia was King David, and he sent to Naples a man called Pietro, who notify the King of Italy that Ethiopians professed the Christian religion.
Answer: The 1920s was the first decade to have a nickname: “Roaring 20s" or "Jazz Age." It was a decade of prosperity and dissipation, and of jazz bands, bootleggers, raccoon coats, bathtub gin, flappers, flagpole sitters, bootleggers, and marathon dancers. (america was a booming age )
Explanation:
I'm pretty sure it was the Julian calendar so Julius Caesar
Besides avoiding plagiarism, documentation provides a paper with PROFESSIONALISM.