Research on dementia and the brain is biased towards Europe and the United States, leaving most of the world population under or unrepresented. The goal of this proposal is to increase representation amongst those populations, to explore robust and geographically-specific associations between the brain and dementia. To increase representation, we will aid groups to have better access to the resources they need to be involved within research and then investigate the relationship between markers of brain changes, dementia and genetics. This will give us better information on how dementia differs in the brain across populations for better clinical care.