I would definitely say that it is Not crossing boundaries set by them. <span />
<span>Let's go through the options:
1. they are all at the same elevation.
- this is not true, as for example London's elevation is 35 meters, and Vienna's 135
2. they are all capital cities.
-false, Cologne is not a capital!
3. they are all located on some of Europe's major rivers.
This is true! for example, London - Thames, Vienna - Danube and Warsaw - Vistula
4. all of these cities are at the center of a metropolitan area of 10 to 20 million people.
Actually none of them are, even the biggest one (London) has "only" 8 million people
5. they are all located along the southern limit of Pleistocene glaciation?
No, for example Vienna isn't! The Pleistocene glaciation was not the most extreme glaciations and it reached the north of Europe, but not the South or Central Europe</span>
<span>They can be threats to internal validity, which refers to how well an experiment was conducted and whether the variables were kept separate.</span>
The three governing bodies of European Union are: the Council which represents the governments, the Parliament which represents the citizens and the Commission which represents European interests. The rest of the EU institutions are: <span>the </span><span>Council of the European Union<span>, </span><span>the </span>Court
of Justice of the European Union<span>, the </span>European Central Bank<span>, and the </span>Court
of Auditors<span>. </span> Currently, there is 28 member states:
Austria, Belgium, Netherlands, Finland, Sweden, Croatia, Spain, Germany,
France, United Kingdom., Italy, Slovenia, Hungary, Romania, Bulgaria, Cyprus,
Czech Republic, Slovakia, Denmark, Estonia, Greece, Ireland, Latvia, Lithuania,
Luxembourg, Malta, Poland and Portugal.</span>
The correct answer is A. The Aryans were Indo-European people who settled in Iran and Northern India.