Answer:
the most common political unit
The correct answer for the given statement above would be TRUE. It is true that in 1066, William the Conqueror achieves political stability in England with the introduction of the feudal system. In addition, t<span>he system progresses over the next two centuries into a national monarchy. Hope this answers the question.</span>
Answer:
It was the result of a "safety trial" gone terribly amiss, compounded by incompetence, and made even worse by misinformation and secrecy. The accident could have been prevented completely, and its consequences could have been mitigated, with effective training, management and regulatory oversight