Which event marked the end of cultural and economic unity along the silk road?
a. the rise of the byzantine empire
b. the fall of the mongol empire
c. the children's crusade
d. the battle of hastings

Which examples are relevant sources for students to use in research? check all that apply. a journal entry written by a professor who is considered an expert a report written by an independent government source a presentation by a company that includes paid information a document published by a renowned organization a scientific paper put out by a non-profit organization a blog whose author tries to sell a product or service