Name tag from module: terraform-aws-vpc

Terraform
1

Hello
I’m using a module. I have created 3 subnets. Now I want to put Name:tag for the subnets. I want to put “USA” for the first, “UK” for the second and “Nepal” for the third. How can I do so?

resource "aws_subnet" "public" {
  count = var.create_vpc && length(var.public_subnets) > 0 && (false == var.one_nat_gateway_per_az || length(var.public_subnets) >= length(var.azs)) ? length(var.public_subnets) : 0
  vpc_id                          = local.vpc_id
  cidr_block                      = element(concat(var.public_subnets, [""]), count.index)
  availability_zone               = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) > 0 ? element(var.azs, count.index) : null
  availability_zone_id            = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) == 0 ? element(var.azs, count.index) : null
  map_public_ip_on_launch         = var.map_public_ip_on_launch
  assign_ipv6_address_on_creation = var.public_subnet_assign_ipv6_address_on_creation == null ? var.assign_ipv6_address_on_creation : var.public_subnet_assign_ipv6_address_on_creation
  ipv6_cidr_block = var.enable_ipv6 && length(var.public_subnet_ipv6_prefixes) > 0 ? cidrsubnet(aws_vpc.this[0].ipv6_cidr_block, 8, var.public_subnet_ipv6_prefixes[count.index]) : null
  tags = merge(
    {
      "Name" = format(
        "%s-${var.public_subnet_suffix}-%s",
        var.name,
        element(var.azs, count.index),
      )
    },
    var.tags,
    var.public_subnet_tags,
  )
}

variable "private_subnet_tags" {
  description = "Additional tags for the private subnets"
  type        = map(string)
  default     = {}
}