Which length of time is accurately represented?

the years 1920 to 1929 are an era.
the years 3001 to 4000 are a decade.
the years 1300 to 1399 are a century.
the years 2000 to 2010 are a millennium

Pkease ! what are a few reasons why the south seceded from the union

What was the effects of the mass demonstrations of strikes that had immediately followed the economic collapse beginning in 1893?

In a speech before the american society of newspaper editors (april 16, 1953), president eisenhower stated: "every gun that is made, every warship launched, every rocket fired signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and not clothed. this world in arms is not spending money alone. it is spending the sweat of its laborers, the genius of its scientists, the hopes of its children. this is not a way of life at all in any true sense. under the cloud of threatening war, it is humanity hanging from a cross of iron." do you agree or disagree?