>2. Which tank was most succesful in World War II?
To my mind, the most succesful tank in WWI is Pz.KpfwIII, the symbol of Blitzkrieg era.
> But most powerful(fire power)?
Of course, IS-2.
>3. Which tank is most better: T-34 or Sherman?
For russian army the best one is T-34, for US Army - Sherman. Each one has strong and weak points. Late T-34, T-34-85 has more powerfull gun. On the other side, Shermans were more reliable tank.
>5. Which was most spread tank after World War II?
Soviet T-54/T-55 serie.
>6. what is full name for T-34 ?
"T" is equal to "Tank". "34" is number in Army specification. First soviet tank has been called T-18.
