isolationism noun [U]. âº politics & government the âpolitical âprinciple or âpractice of âshowing âinterest only in âyour own âcountry and not being âinvolved in âinternational âactivities. (Definition of isolationism from the Cambridge Academic Content Dictionary Â© Cambridge University Press).
The medial malleolus is the prominence on the inner side of the ankle, formed by the lower end of the tibia. The lateral malleolus is the prominence on the outer side of the ankle, formed by the lower end of the fibula.edial malleolus [edit]. The medial surface of the lower extremity of tibia is prolonged downward to form a strong pyramidal process, flattened from without inward-the medial malleolus.
A rift valley is formed when pieces of the Eaâ¦rth's crust move apart from each other. V-shaped valleys are formed by the erosive effects of running water and U-shaped valleys are formed by the erosive effects of flowing glacial ice. Rift valleys occur as lithospheric plates are diverging, creating a gap between land masses which is being infilled with rising decompression melted basaltic magma and lava.