What effects did these advances in military technology have on world war 1?

How do the primary source documents you to understand some of the economic challenges experienced by landowners and freed slaves during the reconstruction era?

Apush explain two forces that led to african american suffrage & public service despite southern resistance

How did industrial production improvements impact export-dependent areas of the world during the great depression?   a.  demand for certain raw materials rose.      b.  demand for certain raw materials fell.      c.  the new technology was exported to most raw material producing nations.      d.  there was a decrease in tariffs.