The first group of people as the u.s mail font: font, wedge or invention "new forms Ku."Cuneiform historians thus removing the basis for dividing the history of era.
The Sumerians were the first to invent characters. Characters include wedge or "Kunis form" cuneiform. Historians, therefore, is based on break-out era of history.
The Sumerians were the first group of letters, including letters, a wedge or "cuneiform" cuneiform. Historians will count as the criterion for dividing the history.