If you could send over a picture of the passage that'll be great but the answer is that he is most famous for his "I have a Dream" speech. He wanted the US to be void of segregation and racism.
The closest meaning to the word congested as it’s used in this means when someone can’t breath because the this she nose becomes swollen that’s why is also called stuffy nose.
A scientist using ordinary decimal notation would have to write the diameter of, say, a helium atom as 0.000 000 000 062 m and the distance to the moon as 340 000 000 m.There would be way too much zeros to write
