Bosnian diaspora should not be confused with Bosniak diaspora.
The Bosnian diaspora consists of Bosnian emigrants of all ethnicities and their descendants in countries such as the United States, United Kingdom, Canada, Germany, Sweden, Switzerland, Australia and elsewhere. There are an estimated 3 million Bosnians living outside Bosnia and Herzegovina.[1]
The Bosnian diaspora was the consequence of either voluntary departure, coercion and/or forced migrations or expulsions that occurred on several occasions since the 1870s:
https://en.m.wikipedia.org/wiki/History_of_Bosnian_Americans_in_St._Louis