1.   Castilian speech, Castilian ploughs, Castilian fallows, and the Castilian attitude to economic activity go together.

2.   Declining productivity levels and environmental degradation have caused a widespread exodus of people to centres of economic activity.

3.   Historians and others have written about the boost to economic activity from technology, religion, and the ideas of political economy.

4.   Maybe a more urgent question is how households are reorganising their economic activities as old industrial structures are modified by long-term change.

5.   More than a third of economic activity takes place in Manila.

6.   Never mind the fact that, in Market economies, almost any economic activity can sometimes be said to meet this test.

7.   One of the fundamental problems of social organization is how to coordinate the economic activities of large numbers of individuals and businesses.

8.   Over a period of Decades, however, the location of economic activity changes.