Of the following which is a technique that interest groups used to influence policy? a. they contribute millions of dollars in hard money to campains b. they organize strikes c. members can testify in congressional committee meetings d. all the above

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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