A ten year period is a decade.
A Period of ten years is called a decade.
A period of ten years is a decade.
A period of ten years is called a decade. Sometimes a decade is used more specifically, to refer to a ten-year period that starts with a year that ends in zero. For example, "the sixties" or "the 1960s" refers to the years 1960-1969.
the ten year period was in 1920
A period lasting ten years, or any ten year period.
It is a decade
It's called a decade.