A) Road development made canals obsolete and rarely used.
I don't know which specific context you refer to - the Han Chinese have conquered many people.
So I will provide one example - in Taiwan, the aboriginal people were required to have Chinese names in their passports until recently, which means that every person was forced to adopt a Chinese name, and often their original name was dropped, and (over generation) forgotten. This has changed how people self-identify: weakening their indigenous sense of identity.
- The Stamp Act (March 1765)
- Townshend Acts (June-July 1767)
- The Boston Massacre (March 1770)
- The Boston Tea Party (December 1773)
- The Coercive Acts (March-June 1774)
- Lexington and Concord (April 1775)
- British attacks on coastal towns (October 1775-January 1776)