The best description of the outcome of the Opium Wars is:
The Opium Wars not only ended the Canton System, but they forced the Qing Dynasty to enter an unequal trading relationship that was more beneficial to Europeans.
This statement accurately reflects the historical consequences of the Opium Wars, which resulted in the imposition of unequal treaties on China, opening up the country to foreign trade under terms that heavily favored European powers and ultimately undermined China's sovereignty.