Bengali poetry is a rich tradition of poetry in the Bengali language and has many different forms. Originating in the Bengal region of South Asia, the history of Bengali poetry underwent three successive stages of development: poetry of the early age (like Charyapad), the Medieval period and the age of modern poetry which was introduced in the 1930s. The national poet of Bangladesh, the country with the highest number of native Bengali speakers, is Kazi Nazrul Islam - a 20th-century writer infamous for his activism against British colonial rule through revolutionary works such as Bidrohi (Rebel).