Public health management <span />
"Governments began to offer services such as mass transit and sanitation" is the way among the following choices given in the question that the <span>cities addressed the problems caused by urban living. The correct option among all the options that are given in the question is the first option or option "A".</span>
<span>Economies of Scale. This means as firms produce more their average costs fall. ...Brand Loyaly. Some firms have high degrees of brand loyalty. ...Geographical Barriers. Some Industries are specific to a certain area. ...<span>Patents.
</span></span>