The world was at war during these years ( W W I).
That is the year Christopher Columbus discovered America.
World war 1 was going on
It's when World War I occurred.
It defines years when something of significance happened.
(2,000 years) times (1,000 years) = 2 million square yearsThat quantity has no physical significance.
To make memories of your teen years.
coincidence
last day of the month, 3 years in every 4
Abbotts Hall Farm was built approximately 300 years ago. The significance of the coastline near it is that it is the largest estuary in Eastern Anglia.
People feel it is a time to start over, to make a new them. (resolutions)
prevented another widespread European war for nearly a hundred years
The Republicans gained control for the first time in eighteen years.