The correct answer to this open question is the following.
The overall consensuses about how worried was Britain about the invasion of 1940-1941 was the following.
The general consensus in Britain was that an invasion was imminent. During World War II, the German troops had already captured France, and in England, people considered that it was just a matter of time until the Germans reached the coasts of Greta Britain. That is when Winston Churchill delivered the famous speech "We Must Fight in the Beaches..."
One of those key moments was the Battle of Britain from July 10 to October 31, 1940, in which the Royal Air Force of Britain defeated the German Air Force.
Thermal Convection, ridge push and slab pull are believed to be the
processes that cause plate tectonics to move.
Thermal convection is a process when the core of the Earth’s heat is
transferred to Earth’s surface by mantle.
Ridge push is when the mantle wells upward
due to convection and raises the edge of spreading oceanic plates. Since the
plates are higher at the spreading center, they are forced downhill because of
gravity as a result, the ocean floor is flatten.
Slab pull is the part of tectonic plates’
motion which can be accounted for through its subduction.
IF you're referring to the British burning down the American capital in the War of 1812, this was mostly done out of spite, and to show that the British had taken control of the area.