Why did world war 1 lasted almost five years ?

These are the reasons why they asted so long xx

• Barbed wire - Difficult to cut  

• Machine guns - mowed down men with intersecting crossfire  

• Gas - Slowed down heavily-laden attackers. Not so affective in trenches.  

• Shells - saved soldiers from all but a direct hit. Churned up the ground. Destroyed drainage systems and made attack difficult.  

• Railway - Could rush reinforcements to a threatened spot very quickly .  

• Lack of secrecy - Enemy could easily see when extra supplies were brought up for an attack  

• Attack at walking pace - Men could only advance at walking pace  

• Lack of experience - Generals never fought this way before and couldn't think of ways of breaking through trenches  

• Zigzagging trenches - Used to stop the enemy artillery destroying a whole line of trench and to prevent successful attackers being able to fire along a long length of a trench  

• Communication Trenches - Joined lines of trenches  

• Blind alleys - Lead nowhere, used to confuse an enemy and sow them down in the event of a successful attack.  

• Forward Positions - were built for miners and snipers  

• Underground "saps" - tunnels driven under enemy trenches so that explosives could be placed under them and detonated.  

• No Man's Land - Difficult to cross as belts of barbed wire, shell holes and very swampy conditions when it rained

hope this helped! (:  

Because no one would give up, everyone thought they were winning but all in all everyone was losing

the principle of popular sovereignty is most closely related to the concept of

democracy

were unable to make a profit due to their debt.