Women's contribution to the war effort during the First World War against Germany was a major factor in women gaining the right to vote in 1918, but it was not necessarily the main reason. Other factors such as the women's suffrage campaigns and the need to reform the electoral system as well as International trend are just as likely causes that affected the decision to give women the vote. But none of these reasons alone caused women to gain the right to vote in 1918, some may be more important than others but it is important to see the campaign for women's suffrage as a build up of pressure over a long time rather than one single event, this is why they are all important factors that would probably have influenced the...