What social or legislative event led to the eventual development of steel band in Trinidad?

The development of the steel band in Trinidad was influenced by the social and legislative changes following World War II, particularly the easing of restrictions on the use of traditional African instruments. The 1940s saw a rise in the popularity of pan music as a form of cultural expression among the Afro-Trinidadian community, especially after the British colonial government's banning of traditional drumming was lifted. Additionally, the introduction of the "Pan" competition in the 1950s helped formalize and promote steel bands as a significant part of Trinidadian culture. These events collectively fostered the growth of steel bands and their recognition as a vital aspect of Trinidad's musical heritage.