To what extent does multiculturalism in developed liberal democracies adequately address the issue of religious diversity?

In recent years diversity in developed liberal democracies has deeply increased. Indeed, in European countries, as in America or in Australia many migrants came to work. Whereas the first migration movements happened within Western countries (e.g. many Italians and Poles came to France to work in the mines), new migrants arriving from the 1950s were mainly from other continents, generally coming from former colonies of Western countries. Contrary to the first wave of migrants, those one are marked by very different cultures, way of life and religion. For example, Great Britain welcomed Hindus, Muslims and Sikhs coming from its former colonies, India and Pakistan. As a result, developed liberal democracies had to find political responses to address this diversity and in particular the religious diversity. Each country adopted its own model and strategy. In this context, the discourse of multiculturalism has focused the intention of many politicians. As Radtke notices, multiculturalism is a "diffused concept" that has traveled the world over from its North American origins in Canada and the United States in the early 1970s, to Western and eventually Eastern Europe, and to Australia and India (Radtke, 2001).