They need markets to sell goods in and stable currencies.
A stronger greenback makes commodity contracts such as metals more expensive for buyers using other currencies.
You'll learn about a new form of the verb called the subjunctive, some useful motoring terms and about exchanging currencies.
Transactions in foreign currencies are translated into sterling at the rate of exchange ruling at the date of the transaction.
Sterling has been very volatile against the other currencies this week, in particular the Australian Dollar.
