According to the Constitution of 1956, what was the official name of Pakistan?

The Constitution of 1956, which came into effect on 23 March 1956, officially declared the country's name as the "Islamic Republic of Pakistan." It was Pakistan's first constitution, replacing the Government of India Act, 1935, as the interim governing document. The Constitution established Pakistan as an Islamic republic with a parliamentary system of government, making Iskander Mirza the country's first President under the new constitutional framework. It remained in force until 7 October 1958, when martial law was imposed and the Constitution was abrogated.