The Men's NCAA basketball Championship, otherwise known as "March Madness", is held each year to determine the university basketball champion in the United States. NCAA basketball is part of the National Collegiate Athletic Association (NCAA), a voluntary association of about 1200 institutions, conferences, organizations and individuals that organize the athletics programs of many colleges and universities in the United States.
... São Francisco[?], Xingu, Madeira and the Tapajós[?] rivers.
Situated along the equator, Brazil's climate is predominantly tropical[?], with little seasonal variation, ...