3. Which country took the lead in
European exploration?

The clayton antitrust act of 1914 a) was used to justify the cries for american involvement in war in europe. b) was passed to guarantee an alliance between the u.s. and the united kingdom during world war i. c) was declared unconstitutional in 1922 by the supreme court's decision in federal baseball club v. national league. d) was passed to tighten loopholes in the sherman antitrust act of 1890 and increase government control of "big business" and monopolies.

What are new social classes emerged due to advancement in agriculture ?

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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