Joe, a lobbyist who represents a certain industry, is meeting with several members of Congress to try to exert political influence by contributing funds to the lawmakers' election campaigns. Joe also is involved in a letter-writing campaign to promote his cause. Joe represents a .

A Special Interest Group.

Explanation:

As the exercise suggests, given that Joe is a lobbyist who represents a certain industry, we can deduce that he represents a Special Interest Group; a community within an organization with an interest to advance in certain areas such as technology, politics, knowledge, etc. As such, he is meeting with several members of Congress to try to exert political influence by contributing funds to the lawmakers' election campaigns. Joe also is involved in a letter-writing campaign to promote his cause.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place