Bolivia's voters approved a new constitution, ushering in further social changes under President Evo Morales. The new constitution recognises the cultural values, languages, right to govern and territory of the 36 indigenous groups who make up a majority of the population. However, a majority of voters in provinces where the population is more ethnically mixed voted against it. These provinces account for most of the country's natural gas production, industry, agribusiness and gross domestic product. The tension between both sides has not diminished.