To build a strong nation the world needs to realize that evryone has a special role to play in life. Government should be doing what's best for people in the world and helping them when thay are unable to achieve things. Communities should have events to come together and make some changes. In life we could come together and achieve great things by teamwork and contribution to society.
(D)The development of stone tools, because the neolithic age has to do with the development of human tools.
Should seem pretty obvious but the traders gained goods from their trade which is a benefit and slaves being slaves, suffered.
