Answer: The remains of an animal after being put under pressure by layers of sediment.
Explanation:
when an animal (or plant) dies, its remains are buried slowly by layers of dirt, sand, small rocks, etc. after the layers are removed, the fossil remains!
The remains can be fully recovered, or they can act as a cast so you can only see the outline of the actual bone or plant rather than the real thing :)
The assassination of Franz Ferdinand is what started WW1, which was done by Serbian rebels, but the county was Austria-Hungary. The two nations that escalated the conflict was Russia, who supported Serbia, and Germany, who supported Austria.
