The earliest money in Jamaica was Spanish copper coins called "maravedíes". This relates to the fact that for nearly four hundred years Spanish dollars, known as pieces of eight were in widespread use on the world's trading routes, including the Caribbean Sea region. However, following the revolutionary wars in Latin America, the source of these silver trade coins dried up. The last Spanish dollar was minted at the Potosí mint in 1825. The United Kingdom had adopted a very successful gold standard in 1821, so 1825 was an opportune time to introduce the British sterling coinage into all the British colonies.