Indigenous religions exist in all climates of the world and exhibit a wide range of differences in their histories, language, customs, and views of the afterlife. Within indigenous communities, religion, social behavior, art and music are so closely intertwined that their religion constitutes an important part of their culture and is virtually inseparable from it. These religions originally developed and flourished independently of each other and are among the earliest examples of religious practice and belief. The modern world; However, this situation took a toll on these groups and many of their histories, customs and beliefs were lost or replaced by those brought by popular culture and the missionary work of Christians and Muslims. Religions have faced many challenges. In addition to the rapid spread of Christianity and Islam, a number of other factors affect their survival, including struggles associated with "maintaining local indigenous worldviews, languages, and environments" (McKinley, Elizabeth). travel, television, radio and the Internet pose a source of threat to indigenous peoples' cultural views and religious practices. Traditional indigenous clothing is replaced by business suits and baseball caps, and traditional building styles are replaced by the "international style" of architecture (Molloy, Michael). Science and technology provide explanations for natural events that indigenous people have historically linked to the will of the gods and indigenous artifacts originally religious in nature are downplayed as mere indigenous works of art. For indigenous culture...... middle of article...... - Survival International." Survival International. Web. April 19, 2012. .4) McKinley, Elizabeth. "Locating the world: culture, language and teaching Science for Indigenous Students.” International Journal of Science Education 27.2 (2005): 227-241. Academic Search Web April 19, 2012. 5) Experiencing the World's Religions: Tradition, Challenge, and Change. -Hill, 2010. Print6) "New Zealand Culture - Maori." New Zealand Travel and New Zealand Business. Tourism New Zealand, 2011. Web. April 23, 2012. .7) Wilford, John Noble. “The language of the world is rapidly dying out.” www.nytimes.com. The New York Times, September 18, 2007. Web April 15.. 2012. .