What is Eurobasket?
This is an international basketball competition contested biannually by the men's national teams governed by FIBA Europe,
Really?
Yes, it was  held  3 years after FIBA was established  in 1935.
When was their most latest competition 
It's held after every 2 years. Biannually 
Really?
EuroBasket
EuroBasket, also commonly referred to as the "European Basketball Championship", is the main international basketball competition that is contested quadrennialy, by the senior men's national teams that are governed by FIBA Europe, which is the European zone within the International Basketball Federation.
History.
History Beginning.
The first championships was held three years after the establishment of FIBA, in 1935. Switzerland was chosen as the host country, and ten countries joined. Only one qualifying match was played between Portugal and Spain. With
- HBL - High School Basketball League
- TBL - Thailand Basketball League
- UAE National Basketball League
- VBA - Vietnam Basketball Association
Men Europe.
 Europe
International Leagues – National Teams
- FIBA EuroBasket- main international European basketball competition contested biannually by the men's national teams governed by FIBA Europe
- FIBA European Championship for Small Countries-international basketball competition contested by select small country national teams governed by FIBA Europe
International Leagues – Club Teams
- EuroLeague – top tier, organized by Euroleague Basketball