The first world war was which year
- The first world war was started in which year
- The first world war was ended in which year
- The first world war years
- The first world war began in which year
- Which year was the first and second world war
- The first world war was between which year
- The first world war was fought between which year
- The first world war was held in which year
- The first world war was broke out in which year
- The first world war began in the year
- The first world war happened in which year
- The first world war took place in which year
- The first world war last four years and ended in 1918
- The first world war started and ended in which year