The British empire popularized the concept of Imperialism in the 16th century as an effort to accumulate natural resources in order to strengthen their empire.
Opium wars occurred after trades conflict between the British empire and the Chinese government. Since the Chinese government tried to limit British' economic interest in China, Britain decided to increase the sell of illegal opium to china and cut down their economic productivity due to the increase in addicts.
The Boxer rebellion occurred after there's a lot of resentment because of western's influence in China. At that time, British empire led the coalition against the revolutionaries groups from China.
Answer: Cinco de Mayo commemorates the Mexican army's unlikely victory over the French forces of Napoleon III on May 5, 1862, at the Battle of Puebla. Mexico had trouble paying back war debts to European countries, and France had come to Mexico to collect that debt.
