In which year was the first icc cricket world cup held

- In which year was the first icc cricket world cup held in india
- In which year was the first icc women's cricket world cup held
- In which year was the first men's icc cricket world cup held
- In which year was the first icc men's cricket world cup held in the twenty20 format
- In which year was the first icc men's cricket world cup held in t20 format