Hi,
How many countries do you target per Adwords campaign you are running?
What percentage (%) of your total daily budget goes towards different countries?
Thank you!
I always put all my locations in the same campaign, and just create bid adjustments based on how well the conversion rate is in each country. No need to break out countries. Another tip is to target the individual american states/provinces in your campaigns as opposed to 'United States'...this allows you to select location bid adjustments for individual states and gives you an extra layer of optimization in your campaigns.
1 per campaign. Try and split it to 1 country per account if you can and ideally 1 campaign per account.