A pleural effusion is a buildup of fluid in the pleural space, an area between the layers of tissue that line the lungs and the chest cavity. It may also be referred to as effusion or pulmonary effusion. The type of fluid that forms a pleural effusion may be categorized as either transudate or exudate.
Economic development is the process by which a nation improves the economic, political, and social well-being of its people. The term has been used frequently by economists, politicians, and others in the 20th century. The concept, however, has been in existence in the West for centuries.
The Dictionary of Human Geography defines development as â[p]rocesses of social change or [a change] to class and state projects to transform national economies. This definition entails an understanding of economic development which is imperative when trying to understand the northâsouth divide.