Answer
Proliferation of public lectures
Explanation
Public lecture is a a method which is normally used for the purposes of educating people or the members of the public.It is normally done by prominent experts in a certain field. In spreading knowledge and ideas in eighteenth century colonial cities used proliferation of public lectures. In the 19th century, the popularity of the public lectures given by professionals and the experts. Public lectures was important in promoting and spreading knowledge .and ideas.
The Balkans are often referred to as the "Powder keg of Europe" because the area saw a number of smaller events that eventually set off much larger ones, leading to World War I. Look at reference.com.
The public demanded that architects leave the support structures of the Washington Bridge open because it has aesthetic value. The exposed steel tower that has a criss-crossed bracing design is the most identifiable characteristics of the bridge.
The Washington Bridge is very beautiful to look at. Because of the cables and steel beams, the bridge gleams like a reversed arch with the sky as the background.
"D. an <span>openness to new ideas and experiences" is not an element of nationalism, since this would imply that people would be open to welcoming new cultures into their country, which is not the case.</span>
A is the answer you're looking for. DuBois hated waiting and even accused Booker T. Washington of being way too soft on the issue.
Hope that I helped!
