Europe's system of military alliances enlarged small conflicts
By following all the steps
I think answer should be the first one
<span>Lineage groups served as the building block as of the African society. This is where the group can declare their descendants, which has a common ancestry wither real or imaginary. They could verify their ancestry through the use of lineage groups and a sense of belongingness, hereafter. These were also the basis of formation of linear groups which the cohesion of the different extended family elements.</span>
The location at which there is a maximum chance of finding a high population density is along the banks of the Niger River. The correct option among all the options that are given in the question is the third option. The fertile soil in the river beds will make people cultivate food easily to support their lives and this is the main reason for a high population near the banks of the Niger river.
