The Opium Wars resulted in:

China ended up having to concede most of its territorial and sovereignty rights, which slowly ended in the demise of the Qing Dynasty

Explanation:

This is called corpus callosum, or callosal commissure.
It is a part of your brain which connects the left with the right hemisphere and affects your entire body as well. Given that the left hemisphere controls the right part of your body (and vice versa), this is all done thanks to the corpus callosum in your brain.