Quick , ? what is the significance of the similarities and differences between william kamkwamba's story and calvin stanley's story? all i need to know is what they mean by the 'significance' of the similarities and differences?

from the conditions of the working class in england by friedrich engels,the main idea is :

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)