Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Obtener premium

Create a timeline

Public timelines

About & Feedback Acuerdo Privacidad FAQ

Cabinet Get premium

Donate

1 ene 150 año aC - Smoke signals used

Descripción:

Greek historian Polybius develops a complex system of alphabetical signals sent by holding sets of torches in pairs

Añadido al timeline:

Timeline of Communications

13 nov 2019

1

0

459

fecha:

1 ene 150 año aC

Ahora mismo

~ 2177 years ago

About & Feedback Acuerdo Privacidad FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL