The hellenistic period followed the reign of
-cyrus the great
-alexander the great
-ptolemy
-romulus

The correct answer is - Alexander the Great.

Alexander III of Macedon, or as is more commonly known, Alexander the Great, during his reign started to spread the Hellenistic culture in his vast empire, thus marking the beginning of the Hellenistic period. Alexander made a nice mixture, by using his Macedonian culture as basis, and putting on top of it the Hellenic culture, he made a mixture that created the Hellenic culture, which is actually a culture that is a mixture of two totally different cultures that almost didn't had anything in common.

It is ironic, that parts of the Hellenic culture were actually spread out and promoted by a leader of the people they despised, and saw as barbarians. The Hellenistic period lasted some time after Alexander's death, in the part of the empire that was controlled by the Macedonian Ptolemy dynasty.

Note: Hellenic and Hellenistic culture/period is not the same. Hellenic refers to exclusively Greek culture. Hellenistic refers to mixture of Macedonian and Hellenic culture.

thurgood marshall

explanation: in 1954, thurgood marshall and a team of naacp attorneys won brown v. board of education of topeka, kansas. in this landmark decision, the supreme court held that segregation in public education violated the equal protection clause of the fourteenth amendment.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.