One historian has given the following description of the economy of the roman empire in the third century under the emperor diocletian: the coinage had become so debased as to be virtually worthless. diocletian's attempt to reissue good gold and silver coins failed because there simply was not enough gold and silver available to restore confidence in the currency. finally accepted the ruin of the money economy and revised the tax system so that it was based on payments in kind. the soldiers too came to be paid in kind. source: ralph w. mathisen, "diocletian," an online encyclopedia of roman emperors, what does it mean to say that the coinage had become debased?

The answer to the question: What does it mean to say that the coinage had become debased, would be: that literally, the value of the coins was nil as the amount of gold, or silver, present in them, was almost nonexistent, being replaced by worthless metals. It means that if anyone was paid using these coins, they would not get the real worth of what they were being paid for, as the coin used had no value.

Explanation:

When talking about money, and especially in ancient times when things were paid with actual coins made out of precious metals like gold, or silver, we are talking about the fact that these coins were worth something because of the metals used to produce them. During Diocletian´s time, because of the little availability of these precious metals, the worth of the coins used to pay for services and for goods, was nule. When money, or currency, has that problem, there is nothing to back it up, and justify its worth, then it is called a debasement of coinage.

it affected it because the kingdoms (with trade) slowly got richer and richer.