Answer: Merchants from different places exchange one type of coin to another.
Explanation: Moneychangers were in (virtually) every city's harbor. Traders from foreigns country came to moneychangers to change their money to the local currency (AKA local coin) so that the traders could do buisness in that country
Answer:
Satellites increased the speed of global communications.
Explanation:
Satellites speeded up the global communications, all communication that before of this had to travel great distances and was electricly transportated thru a wire now had the chance to be just broadcasted from and to a satellite, you could have global communication worldwide.
