contrast, major developing country exporters of manufactures recorded rapidrises in the volume of their exports during the 19708, c'ombined lrithrelatively slow increases tn the unit value of their export6. Tbose developing countries that exchanged primary products other than oil for mahufactures and petroleum found themselvea in the worst position, Hith their terms of trade falling over the courge of the Second Development Decade while their export volume also laqged. Part of the shortfalLs in export volune can be traced to slorr grdrth in world demantl for the primary products exported by /1..A/ 40 /519 Eng1i. sh Page 148 the developing countries, More inportant, houever, was a decline in the marketshare of those countrles for their major products, caused in some rneasure bydomestic failures in agriculture. These divergent trends caused large-scate changes in the commodity composition of deveroping country exports and in the tradebalance positions of those countries. fn terfis of their coomodity composition.reflecting the large increase in their unit varue, fuels rose substantiarl"y as ashare of the value of developing counCry exports. t4anufactured products alsoincreased as a proportion of totat developing country merchandise trade in responseto the rapid expansion in the export volume of these goods. 310. In the first years of the Third D€veloprnent Decade, further svreeping changeshave taken place in the lever, direction and composi.tion of world trade as theglobal economy underwent a period of profound stress and strain. These changes,ere discussed in some detair in section rrl. During the first years of the ThirdDevelopmen! Decade, the process of gtobal adjustment is stitl under way, withlarge-scale imbalances remaining in the external accounts of all groups ofcountrtes.
**Analysis**
The text discusses the trends and changes in the global trade patterns, particularly in the exports of developing countries, and how it affects their economic development. It highlights the decline in the market share of developing countries for their primary products, the rise of manufactured products, and the impact of these changes on their trade balance positions.

**Category**
International trade, Economic development