Which naval policy required Britain to modernize and strengthen its navy?

The Two Power Standard was a naval policy established in the late 19th century, which dictated that Britain should maintain a navy that was at least as strong as the combined fleets of the next two largest naval powers. This policy was crucial in prompting Britain to modernize and strengthen its navy in response to rising naval capabilities of other nations, particularly Germany and France. The emphasis on this standard reflected Britain’s commitment to naval supremacy and national security, recognizing that to maintain its empire and protect its interests, it needed a powerful and advanced fleet.

By adhering to the Two Power Standard, Britain focused on the development of increasingly formidable warships and technologies, ensuring that it did not fall behind its rivals. This policy laid the groundwork for significant advancements in naval engineering and tactics, particularly leading up to and during the early 20th century. As other nations began to expand and modernize their own navies, the Two Power Standard served as a catalyst for Britain's naval reforms and modernization efforts, eventually leading to the creation of revolutionary ships like the dreadnought battleships, which further transformed naval warfare.