This question runs in a pre-configured Salesforce environment - no personal connection required.

Fetch all countries in a specified region from the REST Countries API and return the total count of countries in that region.

Examples:

Input: region = "Europe" Output: 53 Explanation: The API returns an array of all European countries and we count the total number Input: region = "Asia" Output: 50 Explanation: The API returns an array of all Asian countries and we count the total number
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