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I looked at your workbook and you have 2 data sources that only have a date in common - the lower chart will vary by date selected but it has no relationship to country so will not change when you select a different country -
if the data is your customer - product has a relationship to country (i.e. from your original data source) that has not been brought into Tableau and you can load a dataset with the country in it then you can join the 2 data sets on date and country
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