How does Vilhelm Moberg use imagery in The Last Letter Home?

Imagery:

"But the war delayed all activity, all building in this part of the country. There must be an end to destruction and ruination before new undertakings could be started; one could not build a new house while the old was still burning."

"Worst of all, of course, were those damned French trappers- they even used captured Indians as food for their dogs! Those confounded hunters thought this the easiest way to carry dog food with them!"

"From this Sunday, August 17, 1862, the young state of Minnesota had its own civil war. A setting hen's nest was robbed by hungry Indians- and the owner became the first victim. The great Sioux uprising was started by people who had gone hungry, and hunger was its cause. The Call to Alarm: All through the gloom and the light The fate of a thousand Minnesotans was Riding that night."