Answer:
The story of the European settlers in the USA (if that's what you mean) mimics the biblical story of the Israelites reaching the promised land in that they both believed that if they just came to this place of "milk and honey" they would be able to flourish, and truly enjoy life. This was true for the most part.
If you have choices, it would be really helpful if you'd include them with your question, but I'd say
More than half of the forests in the Czech Republic have been destroyed by pollution.
Answer: In some parts of the world, windblown dust and silt blanket the land. This layer of fine, mineral-rich material is called loess. Loess is mostly created by wind, but can also be formed by glaciers. When glaciers grind rocks to a fine powder, loess can form.