Source 3...

1. http://www.rice-paper.com/uses/calligraphy/history/han.html
2. Hou Yunsheng
3. B. A. in Chinese Literature
4. The Han dynasty was from 206 BC - 220 AD. The source also says, "“Modern” Chinese writing is thought to have begun with Han. During this period clerical script which superseded seal script as the normal script for general documents went through a radical reform. By fabricating character elements, or radicals, and reorganizing characters by these radicals, the last pictographic vestige in small seal script was eliminated and the design of Chinese written language was finalized. A overwhelming majority of clerical characters have continued into modern times. To this day, the Chinese still refer to their characters as “han zi”, or Han characters, an echo of remote glory."
5. I believe this source
6. because they provite many examples and it lists the information in clear, and in chronological order.