18641909

18641909 is a compact numeric representation used to denote the lifespan of a person—birth year 1864 and death year 1909—when written without separators. In biographical and genealogical records, this form helps distinguish individuals with similar names and identify sources.

Historically, the years 1864 to 1909 encompass the latter part of the 19th century and the early 20th century, a period marked by rapid industrialization, urbanization, and scientific progress. It includes developments in technology, transportation, and communication, as well as shifts in political organization and global influence that helped shape modern society.

The era saw changes in the structure of states and empires, the expansion of rail and telegraph networks, and the emergence of new political and cultural movements. These dynamics contributed to broad social transformations, including changes in work, education, and everyday life, and set the stage for further modernization in the 20th century.

In biographies, the lifespan 1864–1909 may apply to many individuals across fields such as science, politics, and the arts; when encountered, it signals the subject’s years rather than a duration. Given the variety of people who might share these dates, more context is usually required to identify a specific individual or event.