Humanitarian aid

http://humanprogress.org/blog/the-questionable-economics-of-foreign-aid

http://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.0030508

You are right. 

When it comes to the issue of accelerating growth by trade there are limits inside those countries which are difficult to overpass. 

But one of the failure of foreign aid toward developed countries is that politicians like to play the role of donors and not of builders. And local politicians prefer cash instead of paths to growth.