Hand signaling (open outcry)
Hand Signaling, also known as arb or arbing, short for arbitrage, is a system of hand signals used on financial trading floors to communicate buy and sell information in an open outcry trading environment.
Lionel Nathan Rothschild: became the first Jew to sit in the British Parliament — 11 years after he was elected; the House of Commons had to allow a special oath (1858)
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