The Persians created a set of standardized metal coins during this time period. Why was this important to the development of trade?​

The Persian daric was a gold coin which, along with a similar silver coin, the siglos, represented the bimetallic monetary standard of the Achaemenid Persian Empire. ... Darius considered such encroachment a crime punishable by death since the right of coinage was treated as an exclusively royal prerogative.

Explanation:

answer: a

explanation:  

stocks and bonds are the two main classes of assets investors use in their portfolios. stocks offer an ownership stake in a company, while bonds are akin to loans made to a company (a corporate bond) or other organization (like the u.s. treasury). in general, stocks are considered riskier and more volatile than bonds.

savings accounts are just money in a bank- they are insured by the fdic for up to 250,000.   very little risk

the average mutual fund holds hundreds of different securities, which means mutual fund shareholders gain important diversification at a low price. which means if one stock or bond drops it will have very little affect on the mutual fund - again very little risk

equal area projections

equal-area projection. a projection in which regions on the earth's surface that are of equal area are represented as equal.