When the British landed in Jamaica in 1655, there was a relatively small Spanish population of about 2500, mainly concentrated in Spanish Town (I use the modern name throughout), with some farmers elsewhere.
Jamaica to the Spanish was of use only as a victualling stop for the fleets going to and from the Central American mining colonies.
By 1660 when the last Spanish left, the English had an island virtually empty except for a few escaped Spanish slaves, who had probably interbred with the remaining Taino natives of the island: these fled to the Cockpit country and became the Maroons.
The island was populated by the granting of land by Letters Patent to planters as a means of settling the country.
Ironically, the commuter services inteurbans provided are actually making a comeback as LRT (light rail transit) systems as cities look for alternatives to increasingly crowded highways.
What became the classic interurban all began in the 1870's with two key developments; in 1870 Zenobe Gramme unveiled a generator for commercial use while Werner von Siemens showcased the world's first electric locomotive at an exhibition in Berlin, Germany during 1879.
A small effect of the 1692 earthquake was that the rental account books were all lost, so that those landholders who were in arrears (probably most) escaped payment.
The general impression of Jamaican planters is that they were all rich sugar producers: some were, but not all.
Some of the very early planters were indigo producers, which was an extremely profitable crop in the late 17th C until the emphasis by government moved indigo to the Carolinas and sugar to Jamaica.
The guide is compiled in alphabetical order by state (all American Association of Railroads [AAR] reporting marks are also included with each short line) and I hope you find it useful and helpful, particularly if you are planning a railfan outing and are interested in knowing where a short line operation or two can found in a particular area.
Many short lines operating around the country are now owned by large conglomerates notably Watco, Genesee & Wyoming, and Iowa Pacific.