Of course! From 1803 to 1815 Britain remained at war the entire Napoleonic War period. Britain's Duke of Wellington also played a major role in the Battle of Waterloo in which Napoleon was finally defeated.
Geography had little effect except that Wellington had selected the battlefield and controlled strategic high ground and the few available man made areas that could be used as strongpoints.
Well, exportation is usually beneficial to any nation. The goods a country sells to another, bring it money. Say some farmers in Britain grow a load of potatoes. They sell them on to a large British...