Through the ages

A very old period of history is called the (a)   period.

Something that happens right before another event is the (a)   event.

The next step in a process is called a (a)   .

A period of time that is remembered for particular events is called an (a)   .

A system of organizing events in the order they happened is called a (a)   order.

Something that was known by a different name before was (a)   known as something else.

Something that is going to happen very soon is (a)   .

An event that happens after another is said to occur (a)   .

If something happened at an earlier time, we say it happened (a)   .

If events happen one after another without interruption, they are called (a)   events.