The Law of Conservation of Charge The frictional charging process (as well as any charging process) involves a transfer of electrons between two objects. Charge is not created from nothing. The appearance of negative charge upon a rubber balloon is merely the result of its acquisition of electrons.
The official languages of the island are Spanish and English. Spanish is the primary language of Puerto Ricans, though English is taught as a foreign language in public schools from elementary levels to high school.
The next group of people to influence the culture of Puerto Rico were the African slaves brought from countries such as Sudan, Senegal, Sierra Leone, and the Ivory Coast in 1513. These slaves were brought to the country to work the plantations and provide labor for public works projects, such as roads.