Which came first, the Hebrew Alefbet or the Greek alphabet?

The archaic Hebrew Alefbet is older, and not very different from the Phoenician Alefbet which developed at about the same time. The modern square Hebrew dates to the Babylonian Captivity, the letters are the same as the archaic ones. The Greeks seem to have gotten the idea of an alphabet from the Phoenicians, and went on to improve it by making some letters into real vowels.