 Complete the following phrase:  Vítkov played a major role in the Hussite wars. In April and May 1420, Sigismund, Holy Roman Emperor led a Pope-sanctioned crusade army against the Hussite movement. As Sigismund proceeded towards Prague, the representatives of the city decided to stand against Sigismund and asked Tábor and other Hussite-controlled boroughs for help. Sigismund seized Hradčany and Vyšehrad while the Hussite forces controlled Vítkov. The decisive 