The three main components of intra-Commonwealth trade, have been the exports of Commonwealth countries to Britain, the imports of British goods by these same countries, and the cross trade of Commonwealth countries other than Britain with one another. This last segment has often been influenced by historical relationships or geographic propinquity. For example, the trade of Commonwealth Caribbean countries with each other and with Canada arose out of the British connection and the natural complementarity of the trade in sugar and other tropical products in one direction against forest products, salt fish etc., in the other direction.