Scott Joplin was a very popular and successful Ragtime songwriter in the 1800s. He was known as the "King of Ragtime" and composed 44 Ragtime pieces, as well as two ballets, and a Ragtime ballet. The other three artists were popular musicians in the 1950s and 1960s and did not record in the Ragtime era or style.
Answer: All of them except I think total number of students because no matter the number, people need these ramps
The Middle Passage specific refers to the journey the Africans slaves made from Africa to the Americas. It is called that because it was 2nd trip made by European slaves ships during the Triangular Trade.
The Triangular trade refers to the entire process, and similar to what you described in your question. That is, the European ships traveled to Africa to sell manufactured products for slaves; then these ships took the slaves and continued on across the Atlantic to the Americas (the middle passage), and traded the slaves for raw materials (like cotton) from the colonies; and finally they took these raw materials back to Europe to make clothing and whatever.
One significant issue was the integral role of automobiles and construction in American industry.
