Establishing a uniform set of currency helped to expand trade.
False
True

True.

Explanation:

"Establishing a uniform set of currency helped to expand trade."

The statement in the question above is TRUE because when there is a UNIFORM set of CURRENCY, the rate of the transaction costs will greatly reduce. A single or uniform set of currency is a great tool whenever one is talking about international monetary system.

Another reason why countries in a region adopt a uniform set of currency is to make sure they are capable of facing external volatilities.

A uniform set of currency is to make sure that there is price transparency and and there will be nothing like exchange rate fluctuations.

A great example of a uniform set of currency adopts by several countries is the the Euro for countries in the European continent.

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.