how was the march on washington different from previous marches?

Question

and if u can help me with other questions i will be grateful pls and thanks 

Answer 1

there have been plenty of marches on Washington (e.g. WW 1 soldiers--Gen. MacArthur was ordered to suppress that).

There have also been numerous previous marches (e.g. destination Birmingham).

 

Because your question gives no time frame, the question is rather vague.