According to erikson, psychologically healthy adolescents develop a sense of as they mature into young adults.

sense of self

Explanation:

Identity vs Role confusion (12-18):

In this process, the main task of an adolescent is developing a sense of self. this is the confusing state of mind. This is the state of the struggle of self-identity. adolescent confused in such a question such as who I am, what I am doing here with my life?. They try to fit themselves in different roles and set goals and try to find out self adults. at this stage, the adolescent has a strong sense of self-identity and they want to prove themselves in other perspectives. When an adolescent is apathetic they do not find out their true self-identity, and develop a weak sense of identity and always dependent on parents, and always confused about their future.

vertical merger is the term used for the joining of two or more firms involved in different stages of producing the same good or services.

explanation:

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.