Pedro II around age 25

Pedro II of Brazil, born on December 2, 1825, became Emperor of Brazil at the age of just 5, following the death of his father, Emperor Pedro I, in 1834. During his early years, Brazil was governed by regents until he reached his majority at the age of 14. At around 25, in the early 1850s, Pedro II was in the midst of his reign, which would last until 1889.

At this age, Pedro II was already gaining a reputation for being a dedicated and intelligent ruler, deeply committed to modernizing Brazil. He was an avid scholar and a lover of the arts, sciences, and education, and his reign is often remembered for his efforts to bring progress to the country. He promoted the development of infrastructure, including railroads and telegraphs, and supported the establishment of universities and cultural institutions.

By the time he was 25, Pedro II had established himself as a constitutional monarch with a relatively stable reign, though challenges like political instability, economic issues, and the question of slavery still loomed over Brazil. Despite the monarchy's eventual fall in 1889, Pedro II remained a respected figure, known for his intellectual curiosity and commitment to his country.