Bonjour qui pourrait m’aider svp ? je ne comprends pas et comment on emploi Ago .

1. Amelia Earhart was born 125 years ago.
2.Andy Warhol died 35 years ago.
3.Abraham Lincoln abolished slavery in America 157 years ago
4. Edison patented the light bulb 145 years ago
5. The Science Museum opened 163 years ago in London.