Google Merchant Center and Shopify API Upload

On my US based website, I have the option for international customers to shop and drop ship items to them. What is happening, and what I don’t want to happen is the Shopify API will up load my 20k items to every available country on Google Merchant. In return, my Google Merchant account will have 300k+ items. I only want to advertise in the US market. What setting fixes this? Otherwise Merchant is limiting product becuase I have so many.

Secondly, what prevents Shopify API from uploading all 20k items to US base for ads, but will upload all items to other countries?

Go to the google and youtube app, and go to settings, here scroll to near the bottom where it says Your product feed settings

Then make sure the countries you added, are just the US.

Do you see other countries?