Indigo was a valuable crop used for making blue dye.
In colonial America, specifically in South Carolina, in the 1740s, people started to grow Indigo in their plantations. It was a total success. The Indigo plant was not common in the Americas. So the blue-dye represented an expensive product that just rich families could buy.
The Chinese were humiliated by having to pay reparations and allow concessions to the Western powers that effectively denied them control over their own country.
Joseph Warren is the man that successfully delivered the colonial message to Concord that the British troops were on their was on April 18, 1775 at night.