Which of the following events occurred in 1961? 
 a. building of the berlin wall 
 b. the cuban missile crisis 
 c. the poznan uprising 
 d. the fall of china user: after world war ii germany and berlin were partitioned and divided between which four countries? 
 a. u.s., soviet union, france, and italy 
 b. u.s. , soviet union, britain, and italy 
 c. u.s., soviet union, greece, and turkey 
 d. u.s., soviet union, britain, and france