Complex sentence: Bengali is spoken by individuals from the state of West Bengal, as well as by the people of Bangladesh, and thus it is not exclusively spoken by Indo-Canadians in Canada, but also by Bangladeshis.
Split into simpler sentences: Bengali is spoken by individuals from the state of West Bengal, as well as by the people of Bangladesh. It is thus not exclusively spoken by Indo-Canadians in Canada, but also by Bangladeshis.