Before WW1, Great Britain was enjoying a time of economic growth, following a time of large land increases, due to Imperialism. Life was good.
Great Britain was in an alliance with Belgium in the Treaty of London; thus, when Germany invaded France through Belgium, Great Britain was forced into war, assisting their ally.
The Great Britain victory of the Battle of the Somme was significant in that it was the first major victory in a series of stalemates, resulting in a large loss in casualties.
Riots broke out across England as suffragettes, women standing up for equal and fair rights, protested unfair treatment at work and home, prompting movements for women's rights that are still felt today
Following the war, autonomy in British-held colonies, such as India, increased. People like Mahatma Gandhi, following the Amritsar Massacre, helped lead India into independence.
Due to efforts by women suffragettes throughout the war, women gained more equal voting and personal rights following the war, being treated more fairly at home and work.