What two inventions jazz reach even remote locations of the u. s.?

In 1073, the fight over who gets to choose bishops was between pope gregory vii and king henry the iv. t or f

Which physical feature minimizes population density in northern africa?

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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