Canada is a sovereign state in the northern part of North America. Canada's long and complex relationship with the United States has had a significant impact on its economy and culture. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. Its advanced economy is the eleventh largest in the world, relying chiefly upon its abundant natural resources and well-developed international trade networks. It is rich of natural resources, home to 41 national parks and hundreds of provincial parks. It ranks among the highest in international measurements of government transparency, civil liberties, quality of life, economic freedom, and education.