The whealth of its citzens, the abundance of resources for its citizens, and the architecture and the use of construction in the city
The women who weren't sent away in the war to be a nurse stayed behind to keep the men's job's going. They worked in factories, in mines, on railroads, and other jobs that would be labeled as "mens work"
Pretty much full religious freedom, as long the subjects worshipped Roman Gods. Jews were excused from worshipping Roman Gods.
The amount of silk increased
Belgium's ports were close to the British coast and German control of Belgium would have been seen as a serious threat to Britain.
