Which of the following made the soviet union suspicious of the motives of the united states and great britain during world war ii? :
a the delay in opening the second front in europe.
b the refusal to grant the soviet union lend-lease aid.
c the american monopoly on atomic bomb technology.
d the adoption of the europe-first strategy.
e the failure of the west to accept changes in the borders of poland.

I choose letter A the delay in opening the second front in Europe. The Russians were involved in heavy fighting against the Germans who invaded their country.  Eventually they opened a second front when they landed in Normandy.  Still the Russians resented the delay and this was one of the many that led to tensions in the Cold War.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

d

explanation: