Answer:
Neutral countries affected include; Denmark, Sweden, Portugal, Spain, The Netherlands (Holland), and Russia.
Step-by-step explanation:
The British blockade was a decision taken by Napoleon 1 of France against Britain. This decision was born from the fact that the Britons had instituted a naval blockade along the French coasts.
Napoleon then decreed an embargo on trade with the Britons. The policy however affected the French more than it affected the British people.
Britain attacked Denmark. Sweden was on the side of the British government. This caused its attack by Russia who were on the side of the French. Portugal was on the side of the British government. Napoleon attacked them.