Poland is your best answer.
Poland has 3 different types of color (being <em>Orthodox Christian</em>, <em>Roman Catholic</em>, <em>Lutheran</em>).
Norway only has 1 (<em>Lutheran</em>), France has 1 (<em>Roman Catholic</em>), and Spain has 1 (<em>Roman Catholic</em>), making Poland your answer.
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One example would be economic opportunities. The possibility of a better job would pull someone to a new country. Hope that helps!
Answer:
1. Birds have feathers and are avian creatures whereas fish have scales and are aquatic
2. In a desert landscape you will see little to no plants and dry ground.
3. brilliant and unforgettable
I hope this helps :)
Britain and Germany both signed the treaty