After the centuries of darkness, Arya Samaj was constituted by rebellious sage Maharshi Dayanand Saraswati to initiate the revolution against the misconceptions grown among the Aryan Race about their religion and to revitalize the Vedic Concepts. This Light of Truth enlightened and strengthened Aryan Race all over the world, to stand rock-solid in front of these threats and propagating Vedic Dharma to all mankind. 

But some irrational people, who were jealous and afraid of this rise of staunch Vedic Ideology, started making conspiracies to halt this great movement. After Swami Dayanand Saraswati, they started a drive to kill the major Arya Samaj Leaders. Pandit Lekhram and Swami Shradhanand were brutally assassinated. Arya Samaj Workers and Arya Samaj properties were also being attacked.

After the assassination of Swami Shradhanand on 23 December 1926, all Aryans from all over world raised their voice to show the collective strength of Arya Samaj to the world. This uproar resulted in first Arya Mahasammelan, which was organised in 1927, under the chairmanship of Mahatma Hansraj. 

Maharshi Dayanand Saraswati had started a new era in history of mankind with founding of Arya Samaj. Over the one and half century, Arya Samaj organization spreaded across the world including countries such as USA, Canada, Guyana, Suriname, Trinidad, Mexico, UK, Netherlands, Kenya, Tanzania, Uganda, South Africa, Malawi, Mauritius, Russia, Armenia, Pakistan, Australia, Fiji, Nepal, Myanmar, Thailand, Singapore, Hong Kong, Czech Republic, etc.
With a vision to bring global Arya Samaj at one stage, it was decided during International Arya Mahasammelan 2006 held at Delhi to organize this mega event at different participant countries on annual basis. Since then IAMSs have been successfully organized at USA (Chicago) - 2007, Mauritius - 2008, Suriname - 2009, Holland - 2010, South Africa (Durban) - 2013, Singapore &Thailand - 2014, Australia (Sydney) - 2015, Nepal (Kathmandu) - 2016 and Myanmar (Yangon) - 2017. Thus unity and strength of Arya Samaj as a whole, is shown to the entire world. 

Main objective behind the mega event of IAMS is to spread the message of human welfare originating from Vedas and to promote the principles of universal brotherhood, to eradicate the enmity between various sects / religions and to make the whole world NOBLE – Krinvanto Vishvamaryam. It goes further to have broad level exchange of experiences and ideas between the Aryans working in different parts of the world. Participant Aryans shall have a distinct opportunity to share Vedic thoughts and explore new ways to spread Arya Samaj ideology for character building, moral values, peace and harmony in the world. IAMS demonstrates new means of advanced technologies and innovative methodologies to and through Aryans for sharing the principles and ideologies of Arya Samaj in the fast changing scenario of the world. To redefine, rejuvenate and groom ourselves and our methods to stand high, lead and guide the world to a better tomorrow to live the main principle "krinvanto vishwamaryam" to make the world noble. The aim is to put together all the good that we can gather and let it guide us for the cause of humanity.