territorialism
/ˌtɛrɪˈtɔːrɪəlɪz(ə)m/noun
1A system which gives predominance to the landed class; landlordism. Now historical and rare.
2A theory of Church government according to which supreme ecclesiastical authority is vested in the civil power.
- The principle of territorialism was first established by the Treaty of Augsburg in 1555, which provided for the compulsory conformity of all the inhabitants of a territory of the Holy Roman Empire to the religion of their ruler..
3Association with a particular geographical area; loyalty to or defence of one's own territory or region, especially as considered more important than the larger nation, state, etc., of which it is a part.
4 Scottish. The organization of church work on territorial lines; the delineation of particular areas of a parish for independent mission work in the Church of Scotland. See territorial. Now historical and rare.
5The organization of the Army on a territorial or local basis. See territorial. Now rare.
6Chiefly with capital initial. A Jewish movement aiming to secure an autonomous territory for the Jews in any suitable and available part of the world; the beliefs or doctrine of this movement. Now historical.
7 Zoology = territoriality.
8Human behaviour characterized by aggressive defence of a particular area, sphere of activity or influence, etc.; possessiveness.
Origin
Early 19th century. From territorial + -ism.