What was the main difference between the ancient Greek alphabet and the Phoenician alphabet?

What was the main difference between the ancient Greek alphabet and the Phoenician alphabet? Confirm with facts the idea that the laws of Solon laid the foundations of democracy in Athens. What was good in raising Spartan boys? What can cause your condemnation? Why were the Greeks proud of the victories over the troops of the Persian kings Darius and Xerxes? Which of the battles was decisive during the Greco-Persian wars?

The Greek alphabet had vowels, but the Phoenician alphabet did not;
During the reign of Solon, many changes took place in ancient Athens, so debt slavery was abolished, there was a change in the system of electing government posts, and more. What caused the emergence of a democratic form of government;
The good thing about the upbringing of Spartan boys was that they became hardy and easily adapt to the environment, and the bad thing was that the preparation was very tough, and therefore, some of the boys died;
They were proud because they were able to defeat such a strong state;
The decisive battle was the battle of Plataea, which took place in 479 BC.