What were some of the “time bombs” being experienced by the states under the articles of confederation?

The "time bombs" being experienced were the risk of chaos as there was no central power with the federal government and states could have broken to their own. Because of the decentralization of power it was very difficult to collect taxes and keep the government going smoothly, the trade was difficult between various states and all of these were real threats at that time.

companies sell stock to their businesses grow and become "public"

du boi was considered a radical because he wanted the immediate end for segregation. the biggest different between him and booker t. washington is that, even though washington believed that segregation should be considered illegal, he did not believe at all that a law was needed to keep blacks away from whites and that this would be something natural (to have the races apart) for a long time until society adjusted, while du boi believe that agitation was the only way to end segregation.