Он был основан как город-крепость,

Он был основан как город-крепость, по приказу царя Ивана Грозного в 1552 году, когда он шел своим третьим походом на Казань.

Результаты (английский) 1:

It was founded as a fortress by the order of Tsar Ivan the terrible in 1552, when it was their third visit to Kazan.

Результаты (английский) 2:

It was founded as a fortress city, by order of Tsar Ivan the Terrible in 1552, when he went on his third campaign against Kazan.

Результаты (английский) 3:

It was founded as a city-fortress, on the order of Ivan Grozny king in 1552, when he was its third hike in Kazan.