Since December 21, 2007, Estonia is part of Schengen.
yes
Yes, The Netherlands are a member of the Schengen Area.
Brussels is a city, not a state. Brussels is the capital of Belgium. Belgium is a member of the Schengen Area.
Doha is the capital city of the state of Qatar Qatar is not in Europe, it is not a member of the Schengen Agreement.
Yes. A latvian alien passport is the same as a Schengen Visa. This means that you can travel to any of the schengen states (include Norway), live for up to 90 days without any problems. For stays beyond 90 days, you need a visa from the state where you wish to reside.
Dublin is in Ireland, which is not part of the Schengen Area.The nearest country which is part of the Schengen Area is France.
Yes, but not EU.
Latvia is part of Schengen Agreement, just as Germany is. So YES, you can travel to Germany on a Latvian Visa.
Latvia is an independent country.
Yes, since 2001
A Schengen visa is a visa that allows you to go to all the countries in the Schengen Area. The full list of the 26 current (as of 2012) members of the Schengen area is: Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden and Switzerland.