The law varies greatly from country to country, and you are well advised to learn local laws if you wish to travel to another country. As a general rule, the laws of European countries essentially treat manslaughter the same as a homicide with a deadly weapon, and the penalties are often more severe than in Western countries.
This is due to the fact that European law is largely based on the original Romano-Germanic civil law and often has subtle local cultural influences; whilst we in Western countries are under the Anglo-Saxon common law, which contains a number of forms of manslaughter, which are all viewed differently.
As a general rule, the more Eastern the European country, the more there is a culture of corruption and low-paid police and judicial officials; and the more there is a larger peasant population, which has an influence on local laws and penalties.
Eastern European law is also based on the "guilty until found innocent" premise, whereas Western countries laws are based on the fairer, "innocent until found guilty" premise. In the latter, you will obtain bail and freedom while your case is awaiting consideration; in the former, you will be locked up without any chance of bail until the authorities decide you are unable to be charged with any serious crime. This may take a considerable period of time as the investigation often proceeds at a leisurely pace.
European civil-law codes place a greater emphasis than do common-law systems on the dangerousness of the actor’s conduct, and the circumstances surrounding his act. Thus, bodily injury resulting in death, and death that is a result of negligence rather than recklessness, are more heavily penalised in European law than in Anglo-American systems. Whereas in England death resulting from a felony is defined as murder only in the case of a few serious crimes, such as robbery or rape, European codes often punish any killer as a murderer, as if he had employed a deadly weapon.