Under the provisions of the 1833 India Act, control of Saint Helena was passed from the East India Company to the British Crown, becoming a crown colony. Subsequent administrative cost-cutting triggered the start of a long-term population decline whereby those who could afford to do so tended to leave the island for better opportunities elsewhere. The latter half of the 19th century saw the advent of steam ships not reliant on trade winds, as well as the diversion of Far East trade away from the traditional South Atlantic shipping lanes to a route via the Red Sea (which, prior to the building of the Suez Canal, involved a short overland section). These factors contributed to a decline in the number of ships calling at the island from 1,100 in 1855 to only 288 in 1889.
What act gave control of Saint Helena to the British Crown?
1833 India Act

The Arctic tern holds the long-distance migration record for birds, travelling between Arctic breeding grounds and the Antarctic each year. Some species of tubenoses (Procellariiformes) such as albatrosses circle the earth, flying over the southern oceans, while others such as Manx shearwaters migrate 14,000 km (8,700 mi) between their northern breeding grounds and the southern ocean. Shorter migrations are common, including altitudinal migrations on mountains such as the Andes and Himalayas.
What is an example of a shorter migration?
altitudinal migrations on mountains such as the Andes and Himalayas

These styles generally have either two f-shaped soundholes like a violin (F-5 and A-5), or an oval sound hole (F-4 and A-4 and lower models) directly under the strings. Much variation exists between makers working from these archetypes, and other variants have become increasingly common. Generally, in the United States, Gibson F-hole F-5 mandolins and mandolins influenced by that design are strongly associated with bluegrass, while the A-style is associated other types of music, although it too is most often used for and associated with bluegrass. The F-5's more complicated woodwork also translates into a more expensive instrument.
What style is associate with other types of music?
A-style