"when you finish the worksheet, leave it on your desk so that i can check it when i come around."
this direction by the teacher to a class is an example of

Accountability.

Explanation:

Accountability is defined as the property in which a person tends to perform in account-giving manner to show his/her liability.The person who is supposed to perform this feature is answerable and responsible to carry out any task in public or personal surroundings.

According to the question's situation,teacher is showing her accountable characteristic through her instruction.Children are supposed to complete their worksheet which they are responsible for and then teacher can perform her responsibility of checking by going around the class.

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.

answer; (20%)percent