Which development best illustrates why world was 1 is classified as a foal war

The best choice you have is Chlorine gas. The results were so bad from it that after the war, the Geneva Protocol made the use of Chlorine Gas an international crime.

Any army using it would be held accountable for its use. It has terrible properties. Death is by asphyxiation.

Aerial battles where another example. At first it was a gentleman's war off the ground. Damaged planes were allowed to land if they could. There were rules. Later on, such mercy by either side was not given.

the answer is flapper.

branliest and you.

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