Who invaded constantinople in 1453?
arab muslim armies
ottoman turk armies
roman catholic armies
eastern orthodox armies

B) Ottoman Turk armies

Explanation:

The Fall of Constantinople, (May 29, 1453), conquest of Constantinople by Sultan Mehmed II of the Ottoman Empire. The dwindling Byzantine Empire came to an end when the Ottomans breached Constantinople's ancient land wall after besieging the city for 55 days.

Hope this helps! 'v'

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.