1. Ancient Greeks invented the mathematics behind this.
2. Ancient Greeks died.
3. Mathematics: If you draw a line over two parallel lines, the angles at which they cut will be similar.
Some background:
Internal wars between the Greeks (between city-states, and social classes) weakened the capitals of Greece, which Philip II of Macedon conquered and re-united under his name. His son, Alexander the Great, further conquered. When he died, his empire was divided under his generals, who fought again and further caused weakening, decline, and division amongst the Greeks and city states (Hellenistic Greece). The centres of Greek culture moved to Alexandria and Turkey. Since Greece was in decline, the rising Roman empire could conquer better, and became the ruling power, thus Ancient Greece/Greeks ended/died.
Correlation, I believe: Greece was divided into city-states. Constant warring between the city states weakened Greece and made it difficult to unite against a common enemy like Rome.
2. Ancient Greeks died.
3. Mathematics: If you draw a line over two parallel lines, the angles at which they cut will be similar.
Some background:
Internal wars between the Greeks (between city-states, and social classes) weakened the capitals of Greece, which Philip II of Macedon conquered and re-united under his name. His son, Alexander the Great, further conquered. When he died, his empire was divided under his generals, who fought again and further caused weakening, decline, and division amongst the Greeks and city states (Hellenistic Greece). The centres of Greek culture moved to Alexandria and Turkey. Since Greece was in decline, the rising Roman empire could conquer better, and became the ruling power, thus Ancient Greece/Greeks ended/died.
Correlation, I believe: Greece was divided into city-states. Constant warring between the city states weakened Greece and made it difficult to unite against a common enemy like Rome.