It would be the basic american right of the right to face your accuser in court, or "habeus corpus" that has its origins in article 39 of the magna carta. This came about mainly because too many people were being imprisoned without reason.
The answer is A. Due to the Ottoman Empire’s aggression and that the Balkan states declared independence. With empires like Austria-Hungary and the Ottoman Empire this was the “Power keg of Europe.” After the Death of Franz Ferdinand Austria Hungary declared war of Serbia setting off the power keg. The Ottoman Empire declared war on the allies and helped Austria Hungary.
It can be related but as we say in social science, correlation is not causation.
As such, D is correct as some believe that using suicide bombing is their way of fulfilling a sacred duty. Suicide bombing is merely the vehicle by which they are fulfilling, however misguided, their religious duty.
The fall of the roman empire decentralized europe, their strong government was replaced with loose knit kings and princes. The armys were weaker, trade and education collapsed aswell plunging europe into the dark ages.
The Hundred Year's War marked the beginning of England's Age of Exploration.
hope this helps :)