Anyone know this image and if you do plz send me the link of the creator or animator thx

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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.

What was significant about the 1896 supreme court rulling in plessy v. ferguson

What organizational decisions made by the first congress are still in effect today?