Many Asian and African peoples had produced quite willingly for an international market long before they were enclosed within colonial societies. They offered for trade items such as peanuts and palm oil in West Africa, cotton in Egypt, spices in Indonesia, and pepper and textiles in India. In some places, colonial rule created conditions that facilitated and increased cash-crop production to the advantage of local farmers. British authorities in Burma, for example, acted to encourage rice production among small farmers by ending an earlier prohibition on rice exports, providing irrigation and transportation facilities, and enacting land tenure laws that facilitated private ownership of small farms. Under these conditions, the population of the Irrawaddy Delta boomed, migrants from Upper Burma and India poured into the region, and rice exports soared. Local small farmers benefited considerably because they were now able to own their own land, build substantial houses, and buy imported goods. For several decades in the late nineteenth century, standards of living improved sharply, and huge increases in rice production fed millions of people in other parts of Asia and elsewhere. It was a very different situation from that of peasants forced to grow crops that seriously interfered with their food production.

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But that kind of colonial development, practiced also in the Mekong River delta of French-ruled Vietnam, had important environmental consequences. It involved the destruction of mangrove forests and swamplands along with the fish and shellfish that supplemented local diets. New dikes and irrigation channels inhibited the depositing of silt from upstream and thus depleted soils in the deltas of these major river systems. And, unknown to anyone at the time, this kind of agriculture generates large amounts of methane gas, a major contributor to global warming.

Profitable cash-crop farming also developed in the southern Gold Coast (present-day Ghana), a British territory in West Africa. Unlike in Burma, it was African farmers themselves who took the initiative to develop export agriculture. Planting cacao trees in huge quantities, they became the world’s leading supplier of cocoa, used to make chocolate, by 1911. Cacao was an attractive crop because, unlike cotton, it was compatible with the continued production of foods and did not require so much labor time. In the early twentieth century, it brought a new prosperity to many local farmers. “A hybrid society was taking shape,” wrote one scholar, “partly peasant, in that most members farmed their own land with family labor … and partly capitalist, in that a minority employed wage laborers, produced chiefly for the market, and reinvested profits.”19

That success brought new problems in its wake. A shortage of labor fostered the employment of former slaves as dependent and exploited workers and also generated tensions between the sexes when some men married women for their labor power but refused to support them adequately. Moreover, the labor shortage brought a huge influx of migrants from the drier interior parts of West Africa, generating ethnic and class tensions. Furthermore, many colonies came to specialize in one or two cash crops, creating an unhealthy dependence when world market prices dropped. Thus African and Asian farmers were increasingly subject to the uncertain rhythms of the international marketplace as well as to those of weather and climate.