In 1945, what concern did the allies have about invading the japanese mainland with ground forces? they were worried they did not have enough soldiers. they were worried there would be too great a loss of life. they were worried the japanese were developing an atomic bomb. they were worried the japanese had a stronger fleet in mainland ports.

Explanation:

The militaristic culture of Japan implied that surrender for them was impossible. Such militarism was reflected both in the mercilessness appeared by the Japanese to those they involved just as POW's and with all due respect of islands as the Americans progressed.  

As the Americans involved islands, for example, Iwo Jima, Guam, and Saipan they met with self-destructive opposition. On Saipan, Japanese ladies lost themselves bluffs with their youngsters, regardless of the pleadings of US marines.  

This was the way of life looked by the USA while thinking about a land intrusion. The choice was in this manner taken to drop two atomic bombs on Hiroshima and Nagasaki, prompting Japan's surrender.

The correct answer is that the allies were worried about the great amount of lives that would be lost if they invaded Japan. That was the main reason of the nuclear bombings: try to finish the war avoiding an invasion.

The Battle of Okinawa had been a sign of Japanese tenacity, since the vast majority of Japanese soldiers preferred to die rather than surrender. The American reasoning was that, if only a small island had cost so many lives, invading Japan would be practically impossible.

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof