Modern History of Thissur District begun with the hands of Kings of Travancore. As, Raja Rama Verma became the ruler of Travancore, the British rose into prominence. The British East India has a close fight against Tipu Sultan, the ruler of Mysore, where the rulers of Travancore encouraged their countrymen with art and architecture.

Thissur during British Rule
In 1919 a Committee of the Indian National Congress was functioning in Thrissur. In the Civil Disobedience Movement of 1921, several persons in Thrissur city and other places in the District took active part and courted arrest. Thrissur District can claim the honour of having been in the forefront of the country-wide movement for temple entry and abolition of unsociability.

Guruvayur Satyagraha
Guruvayur Satyagraha is a memorable episode in the history of the national movement. The Government of Cochin under the guidance of R.K. Shanmughom Chetti followed a policy of conciliation. By degrees the public demand for the introduction of responsible Government in the State grew strong.

Cochin State Legislature in 1938
In August 1938, Cochin has announced a scheme for reforming the State legislature and introducing a system as per the Government of India Act of 1919 in the British Indian provinces. The administration of certain departments was entrusted to an elected member of the legislature to be nominated by the King of Travancore.

Quit India movement of 1942
The Quit India movement of 1942 had deeply affected the social and political life of Thissur District. After the release of the leaders from jail in 1943, the Cochin State Praja Mandal pursued its organizational activities more vigorously. In the elections to the State Legislature in 1945 it won 12, of the 19 seats contested by its candidates. At the annual conference of the Praja Mandal held at Ernakulam in 1946 it was decided to start a statewide movement for the achievement of a responsible government.

Transfer of Power and Independence of India in 1947
The Maharaja of Cochin announced in August 1946 the decision to transfer all departments of the State Government except Law and Order and Finance to the control of Ministers responsible to the State Legislature. In co-operation with other parties in the State Legislature, the Cochin State Praja Mandal decided to accept the offer. Consequently, the first popular Cabinet of Cochin consisting of Panampilly Govinda Menon, C.R. Iyyunni, K.Ayyappan and T.K. Nair assumed office. The first step towards the achievement of the goal of Aikyakerala was taken with the integration of Travancore Cochin States in July 1949. With the linguistic reorganization of States in India, in November 1956 the Kerala came into existence in modern Independent India.