Using complete sentences, explain the location of the northern european plain and provide two of its characteristics.

The Northern European Plain is a large complex of lowlands that stretches from Germany to Russia (the European part). Its main characteristics are that it is a very large area consisted mostly of lowlands, and the occasional small hill, and that it has fertile soil. It is an area that naturally is covered with grasses, and it has humid continental climate, thus making it possible that the area has a nice, deep, fertile layer of biomass, making it very suitable for farming. This is actually an area that is heavily used for agriculture, predominantly being planted with grains.

which statement explains one of the reasons world war 1 was so much more destructive than earlier conflicts

may i have the answer choices?