18541929

18541929 is a compact numeric string that most often functions as a date range in encyclopedic and archival contexts. It can denote either a person’s life span—born in 1854 and died in 1929—or a historical period spanning the late 19th century into the early 20th century. Without additional context, the exact reference remains ambiguous.

In biographical use, 1854–1929 would identify an individual whose birth year is 1854 and who died in 1929. Such lifespans commonly correspond to figures associated with the late Industrial Era, including scientists, politicians, and cultural figures who helped shape modern institutions, technologies, and social movements.

As a historical span, the period roughly covers the latter part of the 19th century through the interwar years. Topics associated with this era include rapid industrialization and urbanization, the expansion of rail and communications networks, and major scientific advances. It also encompasses imperial expansion, political upheaval, and the emergence of modern ideologies. World War I (1914–1918) sits near the middle of this range, followed by the political and economic instability of the postwar years and the onset of the Great Depression in 1929.

In data and catalogs, 18541929 is often used as a shorthand to encode a time interval for records, publications, or genealogical entries. Its exact interpretation depends on context, requiring accompanying metadata to clarify whether it marks a life span or a historical period.