The national symbols of the Bangladesh consist of symbols to represent Bangladeshi traditions and ideals that reflect the different aspects of the cultural life and history. Bangladesh has several official national symbols including a historic document, a flag, an emblem, an anthem, memorial towers as well as several national heroes. There are also several other symbols including the national animal, bird, flower and tree.
The national Flag of Bangladesh (বাংলাদেশের জাতীয় পতাকা), known as Red-Green, was adopted officially on 17 January 1972. It consists of a red disc on top of a green field, offset slightly toward the hoist so that it appears centred when the flag is flying. The red disc represents the sun rising over Bengal, and also the blood of those who died for the independence of Bangladesh. The green field stands for the lushness of the land of Bangladesh. The flag is based on a similar flag used during the Bangladesh Liberation War of 1971, which had a yellow map of the country inside the red disc. In 1972 this map was deleted from the flag. One reason given was the difficulty for rendering the map correctly on both sides of the flag. The civil ensign and naval ensign place the national flag in the canton of a red or white field, respectively.
The seal features the same design elements as the first Flag of Bangladesh in a circular setting. The outer white ring is shown with the caption of the official name of the Government of the People's Republic of Bangladesh in Bengali: গণপ্রজাতন্ত্রী বাংলাদেশ সরকার with 4 red 5-pointed stars. In centre the country map on a red disc.
Amar Sonar Bangla (আমার সোনার বাংলা, "My Golden Bengal") is song written and composed by the Bengali poet Rabindranath Tagore, the first ten lines of which were adopted in 1972 as the national anthem of Bangladesh. The song was written in 1905 during the period of বঙ্গভঙ্গ Bônggôbhônggô (Partition of Bengal (1905)) - when the ruling British empire had the province of Bengal split into two parts. This song, along with a host of others, was written by Tagore, a pioneer of the cultural and political movement against this partition. These songs were meant to rekindle the unified spirit of Bengal, to raise public consciousness against the communal political divide. The lyrics first appeared in the September issues of "Bongodorshon" and "Baul" simultaneously, in 1905. It is said that the music of this song was inspired by the Baul singer Gagan Harkara's song কোথায় পাবো তারে "Kothay Pabo Tare". The instrumental orchestra rendition was composed by Samar Das. The English translation was done by Syed Ali Ahsan.