that an object is only ours when we have it – when it exists for us as capital, or when it is directly possessed, eaten, drunk, worn, inhabited, etc., – in short, when it is used by us" (Marx). However, it is important to note that many Marxist-Leninist societies such as China and the dissolved Soviet Union have forms of private property laws. In the United States, "the federal government owns roughly 640 million acres, about 28% of the 2.27 billion acres of land in the United States. Four major federal land management agencies administer 606.5 million acres of this land (as of September 30, 2018). They are the Bureau of Land Management (BLM), Fish and Wildlife Service (FWS), and National Park Service (NPS) in the Department of the Interior (DOI) and the Forest Service (FS) in the Department of Agriculture. A fifth agency, the Department of Defense (excluding the U.S. Army Corps of Engineers), administers 8.8 million acres in the United States (as of September 30, 2017), consisting of military bases, training ranges, and more. Together, the five agencies manage about 615.3 million acres, or 27% of the U.S. land base. Many other agencies administer the remaining federal acreage." See also Claim club Conversion (law) Detinue Escheat Rei vindicatio Replevin Torrens title Trover Infectious invalidity Property law in different jurisdictions Ghanaian property law United States property law English property law Scots property law South African property law Australian property law Notes References AA Berle, 'Property, Production and Revolution' (1965) 65 Columbia Law Review 1 AA Berle, 'Family Lawsuits Over Real Property' (2012) Los Angeles Article Review on Real Property 2 Common law legal systems Common law