The correct answers are:
1. II and IV;
The relic boundaries are man-made boundaries that have existed in the past, but they are not existent in the present. This type of boundaries are often reminder of a period of dividing between the people with force. In the present, the relic boundaries may be found useful in order to divide the country into voting districts, but it can also very often be seen that even though the boundary doesn't exist anymore, the people on the opposite sides of it have different cultural traits. The perfect example is the Berlin Wall, where even nowadays it can easily be noticed that there's cultural differences between the Germans from the Western and the Eastern part.
2. II and IV;
The federal style of government is functioning very well in multiple countries throughout the world, but it also may be a step towards independence of a certain territory.
However, this system functions the best if a country has multiple ethnic groups, which dominate certain part of the country, or if the country has multiple political exclaves. A nice example is the Russian Federation, where these are the exact concepts used for the federal units in the country like Chechnya, Tuva, or Tatarstan.
As a result between the people from the European continent and the people from the North American and South American continents, most of the native populations had died out.
Even though there's the general opinion that the main cause for this were the battles and the killing in them, even though they were numerous and there were casualties, the reason for the mass dying out was totally different, diseases.
The Europeans brought new diseases with them, and the Native Americans were not immune to them, so they spread around them very quickly and they were dying very quickly, which lead to a depopulation of large ares of the continents.
The study of lakes is called <span>Limnology</span>
"Mount Vaals is a hill 322.7 m in height, the highest point in the Netherlands. It is located in the province of Limburg."
