Steel is an alloy of iron and other elements, primarily carbon, that is widely used in construction and other applications because of its high tensile strength and low cost.
The turning point of the Pacific Campaign of World War II was the naval Battle of Midway, which occurred between June 4 and June 7, 1942.
Some major turning points of the war were Battle of Midway, Battle of El Alamien and Stalingrad. These are turning points because they all led to something else; Battle of Midway is when American carrier planes destroyed all four if the attacking Japanese aircraft carriers.