Raising livestock in the sertão is difficult because there is little grazing land. The Sertão is one of the four sub-areas of the upper east of Brazil. Initially, the term alluded to the huge hinterlands of Asia and South America that Lusitanian wayfarers experienced.
The major challenge that the framers faced when setting out to write the Constitution was to create a document and a system of government that could be inclusive of all of the perspectives and viewpoints of the delegates and states involved in the convention. For fear of more conflict amongst the states it was necessary to work to create a document that would be a grand compromise of the many competing views.
A or b I would probley put b hope this helps?