Did Japanese feudalism have a positive or negative impact on Japan?

Describe two observations that galileo was the first to make with his telescope.

Why might the greeck city states have an advantage over the persians

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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