When analyzing a source, historian has to remain unbiased and free from personal feelings and opinions. They know that there are different source of an event and they may reveal different facts which could cross-check his argument. The objective historiography is possible only when the historian is unbiased and when different sources like archaeological, literary and other sources are cross-checked and interpreted independently.
First, because interest groups have stronger and more realistic opinions about public policies (advantageous or not). Second, they are reference of economic, political and religious positions that also involve or interfere in numerous public policies. And third, interest groups are able to pressure congressmen (legislators) on some issues considered as urgent by them.
<em>All interest groups share a desire to affect government policy to benefit themselves or their causes.</em>
Explanation: conflict has led to many geographical shifts mainly in Europe. You have WW1 examples which resulted in many conflicts given all the violence that there was. You have treaties made without other countries’ consents like the Treaty of Versailles. You also have the creation of new countries such as Poland, Yugoslavia, Lithuania, Latvia, the separation or independence of Hungary from Austria. Those small countries surrounding Russia were brought up to stop the spread of communism, since communism was spreading like a “plague” therefore communism wouldn’t reach the powers. Then you had Poland which was established and was used in other to block Russia’s attempt of fighting for land from the regions of the great powers. Poland was there as a sort of blockade between Russia and Germany, Britain, and France. Hope that is clearer:)
