на следующем этапе были установлены

на следующем этапе были установлены консульские отношения,а спустя два года они были подняты до уровня посольств,т.е. были установлены в полном объеме

Результаты (английский) 1:

in the next stage of consular relations were established, and two years later they were raised to the level of embassies, i.e. were installed in full

Результаты (английский) 2:

the next phase of consular relations have been established, and two years later they were raised to the level of embassies, ie. It was installed in full

Результаты (английский) 3:

in the next stage were established consular relations, and two years later, they were raised to the level of embassies). established in full