Cherry pie
I don't know if there is a most important currency in Forex, but the currency that is being traded the most is the USD.
gold and salt (study island answer)
The most important economic enterprise in the American colonies was the lumber industry. The American colonies traded many goods including cotton and tobacco.
The most common currency traded today is the US Dollar with almost 85% of the trading volume.
Coffee
cats
A number of things were traded in these exchanges; probably the most important was silk from China.
spices
Spices
Spices
Most things traded for was chawski mmmm:)
East Africans traded most often with Arabs and Asians.
East Africans traded most often with Arabs and Asians.
salt & gold
I don't know if there is a most important currency in Forex, but the currency that is being traded the most is the USD.
Silver .
Mecca and Dubai are the most important market places in the middle east.