Name the large lake system located in the northeastern part of the United States and southeastern Canada.

Analysis:

The map shows North America. In the region between the Great Lakes and the Atlantic Ocean, there are labels for bodies of water.

Specifically, in the northeastern part of the United States and southeastern Canada, there is a prominent series of large lakes.

The map shows labels for 'оз. Верхнее' (Lake Superior), 'оз. Гурон' (Lake Huron), 'Мичиган' (Lake Michigan), and further east 'оз. Эри' (Lake Erie) and 'оз. Онтарио' (Lake Ontario), which together form the Great Lakes system.

The question asks to name the large lake system located in the northeastern part of the United States and southeastern Canada.

The collective name for these lakes is the Great Lakes.

Answer: Great Lakes