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The Gambia is a very small and narrow country with the border based on the Gambia River. The country is less than 48 km wide at its greatest width. The country's present boundaries were defined in 1889 after an agreement between the United Kingdom and France. It is often claimed by Gambians that the distance of the borders from the Gambia River corresponds to the area that British naval cannon of the time could reach from the river's channel. However, there is no historical evidence to support the story, and the border was actually delineated using careful surveying methods by the Franco-British boundary commission.〔Donald R. Wright (2004). ''The World and a Very Small Place: A History of Globalization in Niumi, The Gambia'' (New York: M.E. Sharp) p. 151–152.〕〔Craig Emms and Linda Barnett (2001). ''Bradt Travel Guide for The Gambia'' (Chalford, UK: Bradt Travel Guides).〕 Apart from its coastline, where the Gambia borders the Atlantic Ocean, it is an enclave of Senegal and is by far the smallest country on mainland Africa. ==Climate== The Gambia has a subtropical climate with distinct dry and rainy seasons. From November to mid-May there is uninterrupted dry weather, with temperatures as low as in Banjul and surrounding areas. Hot, humid weather predominates the rest of the year, with a rainy season from June to October; during this period, temperatures may rise as high as but are usually lower near the sea. Mean temperatures range from in January to in June along the coast, and from in January to in May inland. The average annual rainfall ranges from in the interior to along the coast. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Geography of the Gambia」の詳細全文を読む スポンサード リンク
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