Final answer:
Fredericton is the capital of the province of New Brunswick in Canada, which is part of the Maritime Provinces where tourism is contributing to economic diversification.
Step-by-step explanation:
The province that has Fredericton as its capital is New Brunswick. Fredericton is not only the capital but is also a cultural, artistic, and educational center for the province. This region of Canada, known as the Maritime Provinces, has historically relied on fishing and sea-oriented businesses. Despite recent challenges such as the decline in the fishing economy due to overfishing in the North Atlantic, tourism has been growing, helping to diversify the area's economic activities.