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Answer:
Ronald McNair was nationally recognized for his work in laser physics and was one of the thirty-five applicants selected by NASA from a pool of ten thousand. In 1984, McNair became the second African-American to make a flight into space. He was a mission specialist on the space shuttle Challenger.
Explanation:
<span>1. Etruscan Kings:
The founding of the city of Rome, and the consolidation of power by the domination of neighbouring tribes. The tyranny of the Etruscan kings is what led to the founding of the republic.
2. Republic: The period where Rome's leaders were elected by the citizens of the republic on a yearly basis. This period is where Rome came to dominate the mediterranean through conquest and dominance.
3. Principate: period where Rome was ruled over by single emperors, who often tried to keep the illusion of the republic alive.
4. Tetrarchy: The tetrarchy was the period near the end of Rome's dominance where there were four different leaders of Rome, usually posted in different regions near Rome's frontier in order to defend the empire. The tetrarchy collapsed and eventually lead to the empire splitting into East and West.</span>
