Answer:
the bantu were experts in iron metallurgy- first choice
The impact of the Great Depression was particularly severe in Germany, which had enjoyed five years of artificial prosperity, propped up by American loans and goodwill. Unemployment hit millions of Germans, as companies shut down or downsized.
They are interested in an explanation
Although it is common for people to have different personalities, these personalities are usually based on previous encounters with the world and experiences gathered. Identical twins usually experience very similar if not the same things in their life so it can come as odd if they grow up with completely different personalities.
I think maybe railroads or Gatling gun