As another Answer points out, the Jewish sages of the Talmud (Bava Bathra 15) debate that question, and do not give a definitive answer. See also:
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.
No. Ancient Hebrew is a language, not a place.
No. Ancient Hebrew is a language, and Ancient Israel is nation.
Ryan is ראין in both ancient Hebrew and Modern Hebrew.
הצלחה (hatzlacha) This word is the same in both Ancient Hebrew and Modern Hebrew.
Shae is a Gaelic name. It has no meaning in ancient Hebrew.
Surprisingly enough, the language of the Ancient Israelites (sometimes called Ancient Hebrews) was Ancient Hebrew.
It's the same in both Ancient Hebrew and Modern Hebrew: ספר החיים (Sefer ha-Chayim)
Ancient Hebrew literature had no impact on Ancient Egyptian literature. The Egyptians were thoroughly not interested in Hebrew literature.
It depends at what point, but mainly Hebrew and Aramaic.
The King lead Ancient Hebrew. The first King was Saul, then David, then Solomon, so on and so on.
Some wealthy people could read and write ancient Hebrew, and some couldn't. Just as some non-wealthy people could read and write ancient Hebrew, and some couldn't.Unlike other cultures of the time, literacy was high among ancient Hebrew males.