what is steel in guns germs and steel
durable means of transport
title: Gunmetal text: Gunmetal Gunmetal, also known as red brass in the United States, is a type of bronze – an alloy of copper, tin, and zinc. Proportions vary by approximation but 88% copper, 8–10% tin, and 2–4% zinc is an approximation. Originally used chiefly for making guns, it has largely been replaced by steel. Gunmetal, which casts and machines well and is resistant to corrosion from steam and salt water, is used to make steam and hydraulic castings, valves, gears, statues, and various small objects, such as buttons. It has a tensile strength of 221 to 310 MPa, a specific gravity of title: Guns, Germs, and Steel text: Guns, Germs, and Steel Guns, Germs, and Steel: The Fates of Human Societies (also titled Guns, Germs and Steel: A short history of everybody for the last 13,000 years) is a 1997 transdisciplinary non-fiction book by Jared Diamond, professor of geography and physiology at the University of California, Los Angeles (UCLA). In 1998, "Guns, Germs, and Steel" won the Pulitzer Prize for general nonfiction and the Aventis Prize for Best Science Book. A documentary based on the book, and produced by the National Geographic Society, was broadcast on PBS in July 2005. The book attempts to explain why Eurasian and title: Guns, Germs, and Steel text: indigenous Khoisan peoples – largely exterminated by farm-based societies such as Eurasians and Bantu. He believes this is due to these societies' technologic and immunologic advantages, stemming from the early rise of agriculture after the last Ice Age. The book's title is a reference to the means by which farm-based societies conquered populations of other areas and maintained dominance, despite sometimes being vastly outnumbered – superior weapons provided immediate military superiority (guns); Eurasian diseases weakened and reduced local populations, who had no immunity, making it easier to maintain control over them (germs); and durable means of transport (steel) enabled imperialism. title: Guns, Germs, and Steel text: especially since the widespread adoption of agriculture and resulting cultural diffusion that has occurred in the last 10,000 years. "Guns, Germs, and Steel" was first published by W. W. Norton in March 1997. It was subsequently published in Great Britain under the title "Guns, Germs, and Steel: A Short History of Everybody for the Last 13,000 Years" by Vintage in 1998 (). It was a selection of Book of the Month Club, History Book Club, Quality Paperback Book Club, and Newbridge Book Club. In 2003 and 2007, the author published new English-language editions that included information collected since the previous title: Guns, Germs, and Steel text: editions. The new information did not change any of the original edition's conclusions. Guns, Germs, and Steel Guns, Germs, and Steel: The Fates of Human Societies (also titled Guns, Germs and Steel: A short history of everybody for the last 13,000 years) is a 1997 transdisciplinary non-fiction book by Jared Diamond, professor of geography and physiology at the University of California, Los Angeles (UCLA). In 1998, "Guns, Germs, and Steel" won the Pulitzer Prize for general nonfiction and the Aventis Prize for Best Science Book. A documentary based on the book, and produced by the National Geographic Society, was broadcast