Misc: In 1962 Beatles replace ---------- with Ringo Starr. ?

Questions

a dish of stewed fruits in a syrup?

a stew, mixture, medley, miscellany, or anthology?

Drinkable?

Favoritism to relatives, especially in appointment to desirable positions?

In 1945, near the end of World War II, an important conference involving Truman, Churchill, & Stalin was held in this Polish city?