Roraima is the northernmost and least populated state of Brazil, located in the Amazon region. It borders the states of Amazonas and Pará, as well as the nations of Venezuela and Guyana. The population is approximately 450,000 and the capital is Boa Vista. Wikipedia

Tocantins is one of the states of Brazil.. It is the newest Brazilian state, formed in 1988 and encompassing what had formerly been the northern part of Goiás. Construction of its capital, Palmas, began in 1989; most of the other cities in the state date to the Portuguese colonial period. Wikipedia