Question

Событие которое произошло в 911 году

Answer 1

Заключение дополнительного договора с Византией..

Answer 2

The Event of 911

The event that occurred in the year 911 is not clear from the search results. The snippets provided do not provide specific information about an event occurring in that year. It is possible that the search results are referring to other events or topics unrelated to a specific event in the year 911.

If you have any additional information or context about the event you are referring to, please provide it so that I can assist you further.