Identify something that happened..... (with what was added in class!)
Examples of answers to be added soon!

1 second ago

1 minute ago

1 hour ago

1 day ago

1 week ago

1 month ago

1 year ago

5 years ago

10 years ago

12 to 14 years ago

30 to 40 years ago

60 to 70 years ago

100 years ago

200 years ago

234 years ago

500 years ago

1000 years ago

10,000 years ago

200,000 years ago

2,000,000 years ago

200,000,000 years ago

500,000,000 years ago

800,000,000 years ago

2,500,000,000 years ago

4,400,000,000 years ago

4,566,000,000 years ago

13,700,000,000 years ago