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.
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The Iron Curtain specifically refers to the imaginary line dividing Europe between Soviet influence and Western influence, and symbolizes efforts by the Soviet Union to block itself and its satellite states from open contact with the West and non-Soviet-controlled areas.
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Transistors
Transistors. The onset of the Information Age can be associated with the development of transistor technology. The concept of a field-effect transistor was first theorized by Julius Edgar Lilienfeld in 1925.
<span>Freedom of speech is a bellweather: how any society tolerates those with minority, disfavored, or even obnoxious views will often speak to its performance on human rights more generally. In international law, access to information and free expression are two sides of the same coin, and both have found tremendous accelerators in the Internet and other forms of digital communication. At the same time, efforts to control speech and information are also accelerating, by both governments and private actors in the form of censorship, restrictions on access, and violent acts directed against those whose views or queries are seen as somehow dangerous or wrong. From our earliest days, when we were called The Fund for Free Expression, we have fought all forms of repression of speech, in all media, around the globe.</span>
