Answer
Iskandar Ali Mirza, the first President of Pakistan, preceded Ayub Khan's military coup in 1958. Mirza, a former civil servant, was appointed President in 1956 after the adoption of Pakistan's first constitution. However, his presidency was marked by political instability and economic challenges. Mirza's decision to dismiss the National Assembly in 1958 and impose martial law paved the way for Ayub Khan to seize power.