Q: The place where a river meets the sea is called a(n) __________. A. estuary B. isthmus C. escarpment D. peninsula. A: Place where river meets sea is estuary. Log in to see link for more information.
Although The Guinness Book of Records recorded the XF-84H as the fastest propeller-driven aircraft ever built, with a design top speed of 670 mph (1,080 km/h) (Mach 0.9) and 623 mph (1,003 km/h) (Mach 0.83) during tests, this claim has been disputed.
The SR-71 Blackbird.mashleymorgan / Flickr. The world's fastest manned planes are nothing short of engineering marvels. Capable of flitting through the air at multiple times the speed of sound, these planes take the pilot to the fringe of science fiction. Although a number of these aircraft have since been retired, they continue to be the fastest manned aircraft in history.