Electricity because it made machinery possible since the time of the Industrial Revolution.
From looking this is a multiple choice question and from what I have found is that it became a leader in the Arab world. If needing more information than that please comment that below if not hope that helped.
-Tralynn<span />
The white house was burned down
<span>Homo Erectus was the first one to travel from the cradle of humanity: Africa. It traveled out of Africa around 1.8 million
years ago.
Homo sapiens also had their origin in Africa, they traveled out of it around 130 000 years ago.</span>