The answer would be -> b. incorrect
The answer is Cyclical unemployment.
A pollitical map focuses on boundaries between entities like countries states of counties they are generally brigther colors to easly distinguish the boundaries a phisical maps focuses on the geography of the area and will often have shaded relief to show the mountains and valleys.
The Ming emperors made it their capital in 1421 and it remained China's capital till 1912 when the Manchu Empire fell and SunYat Sen turned China into a republic.
