The Announcer of Freedom of Bangladesh

March, the month of independence, is running now. 26th March is a red-letter day for Bangladesh. At this day in 1971 our independence has been announced. But it is our irony of fate that still now we're in dark about the real announcer of freedom of Bangladesh. When the present opposition party AL was in power, all textbooks informed that Sheikh Mujib was the announcer. After five years BNP got the government power and the information was totally changed. Now we know that Ziaur Rahman announced the independence of Bangladesh. So we, the new generation, are absolutely confused about the announcer. Who is right? AL or BNP? Once I knew that history could not be changed. But now I know nothing is universal including history in Bangladesh! Isn't it?