What caused the battle of Somme?

The offensive began on 1 July 1916 after a week-long artillery bombardment of the German lines. Advancing British troops found that the German defences had not been destroyed as expected and many units suffered very high casualties with little progress.

the 9th amendment

explanation:

they are best known for the cliff pueblos found throughout arizona, new mexico, colorado and utah. and for their development of desert farming.

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