Answer:
It was ruled by the Ptolemaic dynasty, which started with Ptolemy I Soter's accession after the death of Alexander the Great in 323 BC and which ended with the death of Cleopatra and the Roman conquest in 30 BC.
Explanation:
The Velvet Revolution took place in Czechoslovakia in November and December 1989. Velvet in the name is a reference to its peaceful character.
It was a part of series of changes in Eastern Europe at the time.
"background radiation" because if looked at right it can show u how old it is and since the big bang caused and enormous amount of light to come off it left a lot of radiator behind.
hope this is the correct answer.
tbh i haven't studied much about this so i had a little help
-harley