Deductions & credits
You can associate the Foreign Tax paid on a 1099-Div with multiple countries by choosing 'RIC' (Regulated Investment Company) as the Country.
For a second 1099-DIV, do the same.
If your Canadian income/tax is not associated with a 1099-Div or 1099-Int (a pension, for example), then choose 'Passive Income' and the country Canada. You'll have a 1116 for RIC and for Canada.
Here's more info on Claiming the Foreign Tax Credit.
