Because the Incas were very behind in their warfare and military tactics, as well as lack of weapons. Their spears,slings and clubs could were no match against bullets, crossbows, swords and steel armor.
You didn't provide the photograph, but based on previous experience with this question the correct answer is <span>A. women joining the Women's Auxiliary Army Corps to serve in the war
</span> It was a highly important organization during World War 2 and many women joined.
Germany and Japan stroke fear into neighboring nations, concluding war.