Our alphabet came from Latin, which came from the Greek alphabet, which came the ancient alphabet used by Semites. See related link below for more information.
King Arthur never ruled Celtic tribes. He ruled the ancient BRITTONS
Because they are knots created by the Celts
They were called round houses
Celtic Preists where also known as Druids, so yes.
The word "Alphabet" came from Greece. If you look at The Ancient Greece's Alphabet it looks like ours. That's because America copied it! Ancient Greece called "Alphabet", "Alphabeta". They called that because Alpha was the 1st letter in their Alphabet and Beta was the 2nd letter of their Alphabet.
Yes ancient Greece did have an alphabet
If you are asking which letters are not in the Ancient Hebrew alphabet, there are none. The Ancient Hebrew alphabet is identical to the Modern Hebrew alphabet.
The Latin alphabet.
I don't know if 'Green man' actually is used in Celtic languages. The wikipedia article mentions an ancient Celtic god called Viridios which may derive from 'green'.
The Ancient Greek alphabet is over 2,500 years old
Ancient Rome only had one alphabet: the Latin Alphabet. The alphabet with the most similarities at the time was the Greek Alphabet.
There is no Celtic alphabet. All Celtic languages (Irish, Welsh, Manx, etc.) use variations of the Latin alphabet, since they were first written, around the 6th Century CE.-- True, BUT Celtic lettering is distinctive (as are many other regional forms, such as German Fraktur).If you look in "Related links" at the linked graphic of the Gaelic alphabet, you'll see that it has both ascenders -- on B, H, and L -- and descenders -- on F, G, P, R (lowercase only), and S (lowercase only).
I believe London was started as a city by the Romans who Called it Londinium ( or something like that
Hylogriphics
Our western alphabet has its roots in the ancient Phoenician alphabet. Over time its been refined, but its basics go back to the ancient Phoenicians.
The alphabet is not based on a country. It is the Latin alphabet, developed by the ancient Romans.