Ayub Khan was a prominent military and political leader in Pakistan. He served as the country's second President from 1958 to 1969 after leading a coup d'état. His administration focused on economic development and modernization, implementing various reforms in agriculture and industry. During his presidency, Ayub Khan introduced the first constitution of Pakistan in 1962, which established a presidential system of government. However, his rule faced criticism for political repression and growing inequality, leading to widespread protests. Ultimately, he resigned in 1969, paving the way for a new era in Pakistan's political landscape.