The western Caribbean zone is a region consisting of the Caribbean coasts of Central America and Colombia, from the Yucatán Peninsula in southern Mexico to the Caribbean region in northern Colombia, and the islands west of Jamaica are also included. The zone emerged in the late sixteenth century as the Spanish failed to completely conquer many sections of the coast, and northern European powers supported opposition to Spain, sometimes through alliances with local powers. Unsubdued indigenous inhabitants of the region included some Maya polities, and other chiefdoms and egalitarian societies, especially in Belize, eastern Honduras, Nicaragua, and Costa Rica. In addition, the region was the refuge of several groups of runaway slaves, who formed independent settlements or intermixed with the indigenous societies. The combination of unsubdued indigenous people, outlaws (pirates in this case), and an absence of outside control made it similar in some aspects to the American West or the Wild West, as the western half of North America is often called. Its long engagement with the English-speaking Caribbean made it an ideal conduit for trade from both the English colonies of the Caribbean, especially Jamaica, but also North America, which had been trading in the zone since the eighteenth century at least. The relatively low population and strategic location attracted United States-based transportation companies to promote infrastructure projects from railroads to the Panama Canal in the zone, and conjointly with that to introduce large-scale fruit production toward the end of the nineteenth century, often bringing in labor from the English-speaking Caribbean to assist. Unique elements of the region, relative to the population of Central America in general, is the high percentage of people of whole or partial African descent, and its cultural connections to English and the English-speaking Caribbean through language and religion. Early Spanish settlement and conquest The first Spanish settlements on the mainland of South America were at Darien, where Spanish military activities were prominent in the first years of the sixteenth century. But, the Spanish abandoned their positions at Darien by 1520, leaving it, as well as the province of Veragua on the Caribbean coast of Panama, in the hands of the indigenous peoples. This situation continued well into the eighteenth century. The government's occasional licenses given to ambitious Spaniards to conquer or settle these regions never resulted in any significant or long-lasting occupation, nor did attempts of missionaries to convert the indigenous inhabitants result