Great Britain: Blood and Steel (S01E09)

At its height, the British Empire reached across all continents, encompassing a quarter of the planet's land area. Over the years, its leaders harnessed remarkable engineering innovations to establish a formidable industrial and military force, amassing vast wealth. Among their groundbreaking achievements were the invention of the world's first locomotive, an extensive network of underground sewers, the majestic Westminster Palace, and the most formidable and technologically sophisticated navy of the sailing era.