Hello friend!
You can use a cloud connection to enable VPCs across regions to communicate with each other.
Cloud Connect allows you to connect Virtual Private Clouds (VPCs) in different regions to allow instances in these VPCs to communicate over a private network as if they were within the same network.
You'll need to load network instances from these regions to a cloud connection and assign bandwidth for cross-region communications (a network instance can be a VPC you create, a VPC of another user, or a virtual gateway you create for access from your on-premises data center).

For more details, please see What Is Cloud Connect?
Hope this helps!