Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Early Dynastic Period (Mesopotamia)
Table title:
Periodization
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Period </th><th colspan=1 rowspan=1 > Middle Chronology All dates BC </th><th colspan=1 rowspan=1 > Short Chronology All dates BC </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > ED I </td><td class="highlighted"  colspan=1 rowspan=1 > 2900–2750/2700 </td><td colspan=1 rowspan=1 > 2800–2600 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > ED II </td><td class="highlighted"  colspan=1 rowspan=1 > 2750/2700–2600 </td><td colspan=1 rowspan=1 > 2600–2500 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > ED IIIa </td><td class="highlighted"  colspan=1 rowspan=1 > 2600–2500/2450 </td><td colspan=1 rowspan=1 > 2500–2375 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > ED IIIb </td><td class="highlighted"  colspan=1 rowspan=1 > 2500/2450–2350 </td><td colspan=1 rowspan=1 > 2375–2230 </td></tr>
</table>
Question:
What were the dates where the The Early Dynastic period existed?
Answer:
The Early Dynastic period (abbreviated ED period) dated from c. 2900–2350 BC.