I’m sure some of us have siblings either half,step,or biological. Many of us without knowing influence our sibilings by the simplistic ways without even realizing it, it can be just talking in a positive way with you parents without having a temper or anything. Challenges you can face with your siblings and parents is pretty hard sometimes for example you guys don’t agree on a certain plan, a way you can solve this is by letting each persons idea come together as one big idea. Leadership is hard for some and for some they are born with it, however almost all of us have it in us one way or another.
Hope this helped, lmk if you need anything else!!
Geographic isolation and different living conditions.
Explanation:
Both the Neanderthal and the Homo sapiens shared the same ancestor, the Homo erectus. The Homo erectus managed to spread from Africa to Eurasia. The populations started to become geographically isolated from each other, and over time this caused speciation.
The Homo erectus from the far East, with the one from Europe, or the one from Africa, didn't had contact. This was due to big distance and natural barriers. Gradually this species was evolving, and because of the different living conditions and the geographic isolation at different places it started to develop different characteristics. This has led to evolution of different species over time, with the Neanderthal evolving in Eurasia, as well as the Denisovan Man, while in Africa it was the Homo sapiens that emerged.
Slavery for sure. I believe the second one is economic differences between the North and the South.