A
The visa is a necessary validation for entry into the country of destination. The issuance of entry visas is the exclusive competence and sovereignty of each nation. Every country uses different criteria and requirements for the entry and stay of foreigners in their territories, and foreign authorities cannot interfere in this matter. It is important to remember that the requirements may vary depending on the purpose of the trip (http://www.portalconsular.itamaraty.gov.br/vistos-para-viajar-a-outros-paises).
* The exchange candidate will only be able to apply for a visa after receiving the Letter of Acceptance from the foreign institution, his host.
Visa for Mercosur coutries
Brazilians are exempt from a visa to enter Mercosur countries, for a period of up to 90 days. To enter these countries, a valid passport or identity card in good condition is required. Birth certificate is not accepted as a travel document, even for newborns or underage. Driver's License is also not valid for entry into the country. The following are part of Mercosur: Argentina, Brazil, Paraguay, Uruguay, Bolivia, Chile, Peru, Colombia, Ecuador, Guyana, Suriname, Mexico, and New Zealand.
Schengen visa
The Schengen Visa is a short-stay visa issued by all countries in the Schengen area. The Schengen area consists of: Germany, Austria, Belgium, Denmark, Slovakia, Slovenia, Spain, Estonia, Finland, France, Greece, Hungary, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Norway, the Netherlands, Poland, Portugal, Czech Republic, Sweden and Switzerland.
Italian Consulate in Porto Alegre
https://consportoalegre.esteri.it/consolato_portoalegre/pt/i_servizi/per-chi-si-reca-in-italia/
Vice Consulate of Portugal in Porto Alegre
https://www.consuladoportugalportoalegre.com/vistos
GermanConsulate of Porto Alegre
https://brasil.diplo.de/br-pt/servicos/visto
US Consulate in Porto Alegre
https://br.usembassy.gov/pt/visas-pt/
Canadian Consulate in Porto Alegre
https://www.embaixadas.net/Consulado/28482/Canada-em-Porto-Alegre