Yahya Khan was the president of Pakistan from 1969 to 1971. As president, he inherited a two-decade old constitutional problem of interethnic rivalry, complicated by economic grievances and the problem of transforming a virtual autocracy into a democracy. He declared martial law, but it failed to curb domestic unrest, and civil war between East and West Pakistan broke out. Pakistan’s army was defeated, and Yahya Khan resigned after the establishment of what independent republic in 1971? Discuss