Answer:
Protection of important figures, military outposts, border security...
Explanation:
Named a couple, imagine what having a castle would do with the answer above.
The immediate causes of the 1812 war were a series of economic sanctions taken by the British and French against the US.
A polis was the typical structure of a community in the ancient Greek world. A polis consisted of an urban centre, often fortified and with a sacred centre built on a natural acropolis or harbour, which controlled a surrounding territory of land.
Economic - several writers have noted the role of monastics as entrepreneurs.
Social - any good text about medieval monasticism can give you plenty of specific examples of this.
Missionary - some orders were more active in this regard than others.
Cultural - this is perhaps the best known of the work of medieval religious orders and included the creation of the great illuminated manuscripts of the age.
