the temporance movement
No, the first party is the person buying or consuming the alcohol. The second party is the person or establishment selling the alcohol.
Yes, buying alcohol for minors is illegal. It is against the law to provide alcohol to individuals under the legal drinking age.
To prevent the purchase of buying or selling alcohol
In the USA it was called Prohibition.
Selling Dofus accounts is against the ToS so whether it be you're buying or selling an account, it is prohibited and a bannable offence.
The foreign currency against domestic currency is the buying and selling
The SEC (Securities and Exchange Commission)
You don't. Selling or buying accounts is against the rules of RuneScape.
Buying - Selling Buying - Selling
By buying and selling furs.
Buying and selling is a very broad topic that likely refers to buying and selling stocks. One can learn about buying and selling stocks from many sources including Investopedia and About - Stocks.
None are legitimate - buying and selling gold is against the RuneScape terms of service.