The British ruler associated with expanding the British Empire is Queen Victoria. Her reign from 1837 to 1901 marked the height of the British Empire, during which it expanded significantly across Africa, Asia, the Americas, and the Pacific. Known for her strong sense of duty and moral values, Queen Victoria was a symbol of British imperial confidence and a period referred to as the Victorian Era. Under her rule, Britain became the world's foremost global power, with colonies and territories that fueled its economy and culture. Her legacy continues to impact perceptions of empire and colonialism today.