Câu 1:Trong buổi đầu của thời đại kim khí, xã hội loài người đã thay đổi như thế nào? câu 2:thi tộc có những điểm tương đồng với tổ chức xã hội ngày nay của chúng ta?

Which of the following was probably the most difficult challenge facing construction of the railroad?

George works in a factory and is a member of the labor union. he thinks his wages are low for the work that he does, so he tells the union representative that his employer should increase his wages. the representative asks the other workers if they feel the same, and they all agree. the following week, the union representative met with the factory owner regarding an increase in wages, and the employer agred to it. what strategy did the union use to get the owner to agree to increase wages? a individual bargaining b. threaten to go on a strike c. collective bargaining d. threaten to quit their jobs e filing a petition to the government reset next ntum. all rights reserved.

Which two tribes were closely related allies of the wichita? a. the lions and the kiowa apache b. the kadohadacho and the pawnee c. the osage and the quapaw d. the tawakoni and the waco