I believe A might be right
This wave ... As the pogrom spread, units of the SS and Gestapo (Secret State Police), following <span>Heydrich's instructions, arrested up to 30,000 Jewish males, and transferred most of them from local prisons to Dachau.</span>
Answer:
It improved communication across longer distances.
Explanation:
The Second Barons' War (1264–1267) was a civil war in England between the forces of a number of barons led by Simon de Montfort against the royalist forces of King Henry III, led initially by the king himself and later by his son, the future King Edward I. The barons sought to force the king to rule with a council of barons rather than through his favourites.