The ancestral puebloans protected themselves from raiders by building?

food and resources were plentiful.

women were encouraged to marry later in life so they could work in factories.

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.