33
/fr/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
494294
42135
2
Public Timelines
Public TimelinesFAQ
Public TimelinesFAQ
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
Créer
Create a timeline
Public timelines
Library
FAQ

20 avr. 1999 - Columbine massacre

Ajouté au bande de temps:

History of the United States

ByTed52
1 janv. 2018
4
0
3355

Date:

20 avr. 1999
Maintenaint
~ Il y a 26 ans
About & FeedbackUn accordConfidentialitéBibliothèqueFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL