The answer will be Russia, option number 4. plz check the answer in wikipedia. it will be a good help, thank you .have a nice day.

Lake Superior, the largest freshwater lake in the world, is located at the USA-Canada border.
- **Location**:
Lake Superior is one of the Great Lakes of North America and is situated between the United States and Canada. It is the northernmost and westernmost of the Great Lakes.
- **Borders**:
The lake is bordered by the Canadian province of Ontario to the north, and the US states of Minnesota to the west, Wisconsin and Michigan to the south, and the Upper Peninsula of Michigan to the east.
- **Size**:
Lake Superior is the largest freshwater lake in the world by surface area, covering approximately 31,700 square miles. It is also the third-largest freshwater lake by volume, containing about 2,900 cubic miles of water.
- **Importance**:
The lake plays a significant role in the economy and environment of the region, providing important transportation routes, recreational activities, and supporting diverse ecosystems.
- **Tourism**:
Lake Superior is a popular destination for tourists, offering opportunities for fishing, boating, hiking, and other outdoor activities. The lake's rugged coastline and pristine waters attract visitors from around the world.
In conclusion, Lake Superior's location at the USA-Canada border makes it a unique and important natural feature of North America. With its size, beauty, and significance, the lake continues to be a source of pride and enjoyment for those who live near and visit its shores.