4. which of the following was a new military technology used in world war 1 select all that apply ( 2 answers) a. machine guns b. cannons c. submarines d. rifles 5. what was the main failure that led to a virtual stalemate on the western front ? a. france was unable to defend paris b. germany's plan to quickly defeat france failed c. britain's plan to quickly defeat germany failed d. russia's army was much stronger than germany anticipated

a. machine guns; d. rifles

b. Germany's plan to quickly defeat France failed.

Explanation:

During WWI, many new technological developments were adopted. This made the war longer, as it became very difficult to win. Machine guns were particularly important among these developments, originally developed by Hiram Maxim. Rifles were also a new addition.

A stalemate occurs when no country can advance, but neither one is retreating either. This means that the war simply continues to exist, without any change in strategy or in conditions. In the case of WI, one of the main reasons for the stalemate was that Germany was unable to defeat France quickly.

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