d. trade between the US and Canada
Step-by-step explanation:
- Canada has been a member of the World Trade Organization since 1 January 1995.
- It has free trade with the United States (since 1989) and since 1994 it has been included in the North American Free Trade Area (NAFTA), with the US and Mexico.
- This facilitated export expansion and favorable import of the latest technologies from the US.
- Foreign trade accounts for almost 65% of GDP; the main driver of development is the export of goods and services, so the current balance is stable.
- Most of the trade between these two states is located around Great Lakes and the river St. Lawrence, which are actually borders.