The only place in the United States away from an Embassy that flies the UK's Union Jack flag is at Lake Havasu, Arizona.
Various theories exist, but the bulk of the evidence indicates use of the word in its diminutive sense. Before 1600, โjackโ was certainly used to describe a small flag flown from the mast mounted at the end of the bowsprit; by 1627, a small version of the Union flag โ later described as the โJackโ, โJack flagโ or โKingโs Jackโ โ seems to have flown commonly in this position; and by 1674, this flag was described formally as โHis Majestyโs Jackโ and in common usage โ officially acknowledged โ as the Union Jack.
The construction of the first Medieval London Bridge was started in 1176 and continued for 33 years, under Peter de Colechurchโs instructions. The new stone bridge, completed in 1209, was designed with 19 arches and a gatehouse accessed by a drawbridge. It was populated with around 200 shops and businesses, so crossing the river became really hard. The bridgeโs endurance was also put in danger by carrying such a heavy charge on it.
The shops above it, among others, affected London Bridgeโs strength. Although the bridge was not destroyed in the 1666 fire, its stability was seriously deteriorated.
A new construction of London Bridge was started in the 19th century, replacing the old one, demolished in 1831. The actual London Bridge is an even more recent edifice, started during the 1960s. The demolished bridge in 1831 was sold out, and stone by stone it was moved and re-assembled in a new place in Lake Havasu, Arizona.