Петр 1 считал это событие очень важ

Петр 1 считал это событие очень важным и сам принимал участие в работе над первым номером газеты

Результаты (английский) 1:

Peter 1 considered this event is very important and he has participated in the work on the first newspaper

Результаты (английский) 2:

1 Peter thought it was a very important event and he took part in the work on the first issue

Результаты (английский) 3:

Ian 1 felt this event is very important, and he has participated in the work on the first number newspapers