(A) Bomber Aircraft
(B) Tanks
(C) ** Dreadnought Battleships
(D) Submarines
EXPLANATIONS BELOW
Concept note-1: -ships to compete with Britain, Britain felt obliged to build as many, or more, ships to stay ahead. This created a naval arms race, a race to build the most warships! Dreadnought, an ‘arms race’ broke out between Britain and Germany as both tried to build more Dreadnoughts.
Concept note-2: -Dreadnought, British battleship launched in 1906 that established the pattern of the turbine-powered, “all-big-gun” warship, a type that dominated the world’s navies for the next 35 years.
Concept note-3: -Dreadnought brought together for the first time a series of technologies which had been developing over several years. Most important was her firepower. She was the first all big-gun battleship-with ten 12-inch guns. Each gun fired half-ton shells over 4ft tall and packed with high explosive.
Concept note-4: -Admiral Sir John “Jacky” Fisher, First Sea Lord of the Board of Admiralty, is credited as the father of Dreadnought. Shortly after he assumed office in 1904, he ordered design studies for a battleship armed solely with 12 in (305 mm) guns and a speed of 21 knots (39 km/h; 24 mph).