Price : American Port Towns 161 the great commercial centers of colonial America was South Carolina. At the beginning of the eighteentE century it was important only for its Indian trade, though it en- joyed a small trade with the West Indies in forest products and provisions. In the eighteenth century it developed two great agri- cultural staples: rice (after 1710) and later indigo, bopn grown by slave labor in the coastal districts near Charlestons These trades reached impressive proportions. In 1769, rice/exports from the thirteen colonies (83 percent originally from Charleston) were worth .£340,693, making this the fourth/most valuable export of British North America just after fish (pefbacco and the wheat-flour group being first and second). At tKe same time, indigo exports from the same colonies (almostXll originally from Charleston) were worth .£131,552, the fi£th most valuable export from the colonies.72 More than half tne rice went to Great Britain with a large fraction also going to southern Europe and the West Indies and lesser quantities to/the other mainland colonies. (Large but unknown quantities,/were retained in South Carolina for local consumption.) As provided by law, almost all the indigo went to Britain, where it xvas valued for the textile industries. One of the smking features of South Carolina colonial life was the degree to which the single port of Charleston was able almost to monopoli/e the import and export trade of that colony and even of nearby Georgia. While New York and Pennsylvania really had room for/only one significant port at the mouth of each of their great rivers, South Carolina had a number of river valleys and pos- sible h/rbor sites. Nevertheless, river and coastal communication sy and a very high proportion of the external commerce of was Soum Carolina became concentrated in Charleston, which also handled some of the trade that emanated from North Carolina and Georgia. Tiiis pattern began in the first half century of settlement, when the settled areas all lay close to Charleston, but persisted after 72. U. S. Historical Statistics, pp. 761-762, 767-768. For the five years, 1768-1772, Shepherd ("Commodity Exports," p. 65) estimates annual average value of colonial exports at: tobacco, .£766,000; flour and biscuit, ,£412,000; nee, £312,000; dried fish, £2^7,000; indigo, £117,000.