What does it mean to be at the bottom -- culturally, socially, politically, and economically? explain in detail. what does it mean to feel "invisible" in the united states? in what ways is tammy crabtree invisible, and to whom?

The idea of being at the "bottom" is one derived from the concept of social hierarchy. In a social hierarchy, certain groups in society are considered valuable and admired (at the top) while others are often ignored, abused, or rejected (at the bottom). In our society, this is usually related to the socio-economic position an individual has. Therefore, people at the "bottom" can often feel "invisible." They feel that the government, as well as social institutions, care little about their interests and needs.

Tammy Crabtree can be seen as an example of this. She is likely to feel invisible, as very few people care about her plight. She works far from her house, for a very low wage, and feels unable to improve her future.

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