Final answer:
Belize is the country that hosts the Belize River, as well as the New River, Sibun River, Monkey River, and Hondo River. It is located on the eastern coast of Central America and is known for its diverse ecosystems and ecotourism initiatives.
Step-by-step explanation:
The country with the Belize River as its major river, formed by the confluence of the Macal River and Mopan River, as well as other rivers such as the New River, Sibun River, Monkey River, and Hondo River, is Belize. Located on the eastern coast of Central America, Belize is bordered to the north by Mexico, to the south and west by Guatemala, and to the east by the Caribbean Sea.
The nation is known for its diverse ecosystems and species, making it a crucial part of the Mesoamerican Biological Corridor. Belize promotes ecotourism due to its natural beauty, which includes the longest coral reef in the Western Hemisphere.
Though it has a population of approximately four million and the lowest population density in Central America, Belize is undergoing development in areas like ecotourism to boost its economy. English is the official language, with Spanish also widely spoken due to immigration.