In 1903, a protest against the introduction of new water rates in Port of Spain erupted into rioting; 18 people were shot dead, and the Red House (the government headquarters) was damaged by fire. A local elected assembly with some limited powers was introduced in 1913. Economically Trinidad and Tobago remained a predominantly agricultural colony; alongside sugarcane, the cacao (cocoa) crop also contributed greatly to economic earnings in the late 19th and early 20th centuries.