Growth of Test cricket

When the Imperial Cricket Conference (as it was originally called) was founded in 1909, only England, Australia and South Africa were members. But that would soon change, and India, West Indies and New Zealand became Test nations before the Second World War and Pakistan soon afterwards. The international game grew with several "affiliate nations" getting involved and, in the closing years of the 20th century, three of those became Test nations also: Sri Lanka, Zimbabwe and Bangladesh.
Test cricket remained the most popular form of the sport throughout the 20th century but it had its problems, never more so than in the infamous "Bodyline Series" of 1932/33 when Douglas Jardine's England used so-called "leg theory" to try and neutralise the run-scoring brilliance of Australia's Don Bradman.