9 U.S. coins (coinage)is manufactured by mints in what cities? New York City and Dallas Chicago and San Francisco Atlanta and Seattle Philadelphia and Denver

## Step 1<br />The question is asking about the cities where mints manufacture U.S. coins. The United States Mint is a government agency that manufactures coinage for the United States to conduct its trade. <br /><br />## Step 2<br />The United States Mint operates several facilities across the country, but the primary production of coins takes place in Philadelphia and Denver. <br /><br />## Step 3<br />The Philadelphia Mint, established in 1792, is the oldest active mint in the United States. It produces a variety of coins, including the American Silver Eagle, the America the Beautiful series, and the Presidential Dollar coins. <br /><br />## Step 4<br />The Denver Mint, established in 1893, produces a variety of coins, including the America the Beautiful series, the Presidential Dollar coins, and the America the Beautiful series. <br /><br />## Step 5<br />The other cities mentioned in the options, such as New York City, Dallas, Chicago, San Francisco, Atlanta, and Seattle, do not have mints that manufacture U.S. coins.