The attack on the World Trade Center.
You cant. It happened in 2001
9/11 happened in 2001.
They are called chronological order. An event that happened in 2001 would come before an event that happened in 2002.
the twin towers fall
The twin tower fall down
the world trade centers collapsed.
the twin towers fall
On September 11th, 2001, planes hit the twin towers and the pentagon.
Barack Obama was elected President.
You use the word prior when speaking to an event, like; prior to an event, it means this happened before a certain event, or before something happened. Say there was a crime, and people were talking about how this happened, and what happened prior to this event.
what astronomical event happened in august 1999
The near-passed British tax on sausage rolls