1890-1900
The answer will depend on which country or region the question is about.
1890-1900
India
In the last decade there was terror in the west. The 1940s DECADE experienced World War, V-J Day and the start of the Cold War.
No largest one; each runs exactly ten years.
1850
No largest one; each runs exactly ten years.
Nightly Business Report - 1981 Careers for the Next Decade was released on: USA: 26 November 2009
1760's
triennium
Last decade
The age group that experienced the largest increase in the male-female ratio from 1990 to 2000 was likely the senior population, typically age 65 and over. This age group tends to have a higher proportion of females due to longer life expectancy, leading to a larger increase in the male-female ratio as the population ages over the decade.