<Ul> <Li> Boris Godunov, an opera based on Pushkin's play, composed by Modest Mussorgsky . </Li> </Ul> <Li> Boris Godunov, an opera based on Pushkin's play, composed by Modest Mussorgsky . </Li> <Li> Dimitrij, an opera by Antonín Dvořák, and Dimitri, an opera by Victorin de Joncières, about the first false Dmitriy, with librettos descended from Friedrich Schiller's fragment Demetrius </Li> <Li> Monument to Minin and Pozharsky, on the Moscow Red Square . </Li>

Who played a major role in defending muscovy during the national phase of the time of troubles