How did the dred scott decision intensify the slavery disagreement?

What was the “u-2 incident” and how did it affect u.s./soviet relations in 1960?

Read the following excerpt from president roosevelt's july 24, 1933, fireside chat. for many years the two great barriers to a normal prosperity have been low farm prices and the creeping paralysis of unemployment. these factors have cut the purchasing power of the country in half. i promised action. congress did its part when it passed the farm and the industrial recovery acts. today we are putting these two acts to work and they will work if people understand their plain objectives. which qualities of effective leadership does roosevelt use in this excerpt? select all that apply. humility communication self-confidence goal setting

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 a. primary sources are historical documents, and secondary sources are modern-day documents.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