How did they make all those breakthroughs? They made all those breakthroughs by torturing all the people in the world and by a stroke of luck (industrialization). Africa is still suffering from their imperialism.
http://www.aljazeera.com/programmes/specialseries/2013/08/201387113131914906.html
https://www.globalresearch.ca/the-congo-still-ravaged-by-u-s-funded-conflict-and-plunder/5375098
Amazon and Google would not have been possible without the help of a black man who formed the modern internet, Dr. Philip Emeagwali.
Now let's discuss how the Europeans held back humanity.
1. They destroyed the Library of Alexandria (some historians say that they held back humanity for 500-1000 years).
2. They also destroyed the Serapium of Alexandria (an offshoot of the Library of Alexandria)
3. Destroying the libraries of Cordoba
4. Colonization (the mûrdèr of hundreds of millions of people) How many Newtons, Einsteins, and Davincis did they kîll?
5. Neo-Colonization (There are many young African inventors who don't have finances due to European exploitation)
http://venturesafrica.com/10-under-30-african-inventors-set-to-change-the-world/
There are many more examples, but those are off the top of my head. Europeans held back humanity by at least 1,000 years. If it wasn't for them, us Africans would be traveling in space with these