The correct answer to this open question is the following.
Although you did not attach the name of the video or the link to the video, we can comment on the following general terms.
The conditions that allowed our ancestors to survive were their capacity to endure dry climates in the south part of Africa, their capacity to walk upright to walk long distances, their arms and hands to climb trees to get fruits and escape from big animals. Another condition that allowed our ancestors to survive was the evolution of the brain capacities that allow them to use basic tools.
Our Homo Spaines ancestors evolved from other types of humanoids 250,000 years ago.
