Why did immigrants take low paying jobs

Which of the following best describes the economic effect that results from the government having a budget surplus?

What notable contributions to science has sandia national labs (snl) produced over the years?

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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