Short answers, pulled from the story.
Charles Parsons invented the modern steam turbine in 1884. This reaction type invention made cheap and plentiful electricity possible and revolutionized marine transport and naval warfare.
The largest steam turbine ever built is the 1,770 MW Arabelle steam turbine. Two units of this turbine will be installed at Hinkley Point C Nuclear Power Station in England.
About 42% of all electricity generation in the United States in 2022 was by the use of steam turbines. Electrical power stations use large steam turbines to produce most of the world's electricity, which is about 80% of the total.
The Royal Navy decommissioned its last conventional steam-powered surface warship class, the Type 45 destroyer, in 2002. The Italian Navy followed in 2006 by decommissioning its last conventional steam-powered surface warships, the Maestrale class.
The most common speeds for steam turbines used in electric power generation are 3,000 rpm for 50 Hz systems and 3,600 rpm for 60 Hz systems. Nuclear reactor turbine generator sets may operate at half these speeds to reduce erosion of turbine blades.