Battle of Iwo Jima and Okinawa

The surrender of Japan to the Allied forces (correct)

The fall of Okinawa to US forces

The declaration of war by the Soviet Union on Japan

The dropping of the second atomic bomb over Nagasaki

They were marked by spectacular carnage (correct)

They were insignificant in the overall war effort

They marked the end of the war in Europe

They led to the fall of the Japanese home islands

The threat of a German counterattack

The knowledge that war was still raging on in the Pacific (correct)

The fear of a Soviet invasion

The lack of significant victories in Europe