I believe the answer is d.
Answer:
Andrew Jackson's presidency was from 1829 to 1837, and historians generally regard the Jacksonian Era as an extremely important period in the nation's history. The three greatest challenges President Jackson faced were the Eaton Affair, Indian Removal, and Nullification.
Explanation:
I believe the answer is: The printing press allowed mass production of books that spread new scientific ideas.
The invention of printing press make it easier for people to obtain information that they previously couldn't have dream to have access on. The number of Literacy rate after the printing press soar along with the number of scholars who choose to pursue higher education.
Answer:
Then in the 1800s major changes came our way. The telephone and radio were invented. ... To the people living in that day and age it could be said that radio, telephone, letters and telegraphs were their social media platforms. It was the way they were able to communicate with their public.
Explanation:
The correct answer to this open question is the following.
First, we have to clarify something. This is not the correct statement for the question.
The correct question should be read like this: "Explain the significance of Alan Freed renaming race music as rock-and-roll music."
Now, we can comment on the following.
Alan Freed was a famous disk jockey in the 1950s, The significance of Alan Freed renaming race music as rock-and-roll music was that this change allowed him to promote this modern music in different publics, including the white youngsters that immediately fell in love to rock and roll.
What he successfully did was to take the black musicians that played rock and roll like Little Richard and Chuck Berry, to the massive white audience that had the money to buy records and buy tickets. And sell records and tickets he did, because he promoted r&r music and produced many concerts in different venues.