The chief task of adolescence, according to erikson, is to confront the crisis of in order to become a unique adult with a coherent sense of self and a valued role in society.

The correct answer is known as "identity versus identity confusion".

In this stage of Erikson's psychosocial Development, adolescents between the age of 12-18. The transition from being a child towards adulthood are vital, wherein children starts to become independent and start to think about their future, such as their careers, their relationship and their families.

The holy roman empire.

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.