Soil was loaded onto Spanish galleons traveling from Acapulco, Mexico, to Manila, Philippines, in the 16th century. The soil, needed for ballast on empty vessels, likely also included tropical ...

Find out more about the trade routes in this short film ... to trade 144,000 enslaved people a year to Spanish South America. After 1700, the numbers of enslaved people being transported ...

Long before the Panama Canal, this historic trade route connected the Pacific and the Caribbean. Now you can follow the jungle crossing on foot.