Answer:
Establishing foreign policy regarding Russia
Executive branch
Ratifying a trade agreement between the United States and Canada
Legislative branch
Interpreting a treaty the United States entered into with the United Kingdom
Judiciary branch
Explanation:
The Judiciary has the primary function of interpreting the laws of the land, or in this case, the treaty entered between its country and another country.
The Legislature has the main function of ratifying laws (or treaties), to make sure they are constitutional.
The Executive branch has veto power and also serves the function of starting negotiations and establishing foreign policies.
