enable-region — AWS CLI 2.15.32 Command Reference
https://awscli.amazonaws.com/v2/documentation/api/latest/reference/account/enable-region.html
Web--region-name (string) Specifies the Region-code for a given Region name (for example, af-south-1 ). When you enable a Region, Amazon Web Services performs actions to prepare your account in that Region, such as distributing your IAM resources to the Region. This process takes a few minutes for most accounts, but it can take several hours.
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