Wallace Line by the Sahul Shelf to New Guinea. The biogeographic boundary known as Lydekker's Line, which separates the eastern edge of Wallacea from the Australian region, has a similar origin to the Wallace line. During ice age glacial advances, when the , both Asia and Australia were united with what are now islands on their respective continental shelves as continuous land masses, but the deep water between those two large continental shelf areas was, for over 50 million years, a barrier that kept the flora and fauna of Australia separated from those of Asia. Wallacea consists of islands that were not
Line of Actual Control Line of Actual Control The Line of Actual Control (LAC) is a demarcation line that separates Indian-controlled territory from Chinese-controlled territory in the former princely state of Jammu and Kashmir, formed after the 1962 war. There are two common ways in which the term "Line of Actual Control" is used. In the narrow sense, it refers only to the line of control in the western sector of the borderland between the two countries. In that sense, the LAC forms the effective border between the two countries, together with the (also disputed) McMahon Line in the east and a small undisputed