The Opium War is an example of imperialism as a historical practice.
The practice where a dominant nation or power assumes the control over the poorer or weaker powers to gain access to the important resources of such nation.
The British powers also took control of the weaker Chinese authorities and gained access to the opium, that influenced the trade during the period of Opium War.
Hence, option B holds true that the historical practice is an example of imperialism.
Learn more about imperialism here:
https://brainly.com/question/1225474
#SPJ1