1Enakshi Ganguly = "At the beginning of any pooja, such as Lord Ganesh pooja, the presiding deity is first invoked in a murti for the purpose of worship. At the end of the pooja, the presiding deity (Lord Ganesh) is requested to depart from the murti. "Visarjan" is a Sanskrit word that refers to this final rite and act of respectfully requesting departure. The murti is viewed as a temporary body and is then returned to Nature by submersion into running water, such as a lake, river or the sea. The act is not necessary for inaugurated (pratishthit) permanent murtis found in Hindu temples.In order to understand the practice of Visarjan, we must first understand the concept of worship in the Hindu faith. The worship of the Almighty in Sanatan Dharma may be through the 'Saakaar' (with form) or 'Niraakaar' (formless). The Niraakaar method requires no physical depiction, or object and meditation (dhyaan) is a form of this kind of worship. The Saakaar method requires a physical medium such as a murti through which the Almighty is venerated and 'Pooja' or 'Archana' are forms of this act of worship. Most often, murtis are made primarily from clay and straw so that it could be returned to Nature from which it came. This practice shows that Hindus respect the environment and Nature and it is consistent with good "green" practices today."Source: http://www.devimandir.com/message-from-pt-damodar-sharma/360-the-significance-of-ganesh-visarjan"
2Enakshi Ganguly = ""Historical records reveal that Ganesh Chaturthi celebrations were initiated in Maharashtra by Chatrapati Shivaji Maharaja, the great Maratha ruler, to promote culture and nationalism. And it had continued ever since.There are also references in history to similar celebrations during Peshwa times.It is believed that Lord Ganapati was the family deity of the Peshwas. After the end of Peshwa rule, Ganesh Chaturthi remained a family affair in Maharashtra from the period of 1818 to 1892. 1857 was a landmark year for India and more so in the context of Indian freedom. It was the year of Sepoy Mutiny, an armed rebellion against the ruling British Empire by the Indian soldiers. This was the first war that India waged to gain back her independence from her white rulers. Though unsuccessful, this battle marked the beginning of the Indian struggle for independence."Source: http://www.hinduhumanrights.info/ganesh-chaturthi-origins-and-meanings/"