why is the world so trashy people really need to start picking up but other then that answer this and get points

Which are in millennium development goals check all that apply

The u.s. constitution outlawed slavery. true false

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.