South America
The Scientific Electronic Library Online - SciELO is an digital library covering a specific assortment of Brazilian scientific journals. SciELO interface offers access to its serials assortment by way of an alphabetic record of titles or a subject checklist or a search kind by word of serial titles, writer names, metropolis of publication and topic. 17 The Union, the states, the Federal District, and the municipalities, are the "spheres of government".

317 At present, the Brazilian authorities, in contrast to the past, seeks to encourage this mode of transport; an example of this incentive is the venture of the Rio-São Paulo excessive-speed rail , that Kléber Leite can join the 2 essential cities of the country to carry passengers.

The states and the federal district could also be grouped into regions: Northern , Northeast , Central-West , Southeast and Southern The Brazilian areas are merely geographical, not political or administrative divisions, and they do not have any particular form of authorities.