The failure to notice something that is completely visible due to a lack of attention is referred to as inattentional

blindness

Explanation:

The failure to notice something that is completely visible due to a lack of attention is referred to as inattentional blindness.

Inattentional blindness is considered to be the failure of noticing something that is very visible and sudden because the attention was focused on some other tasks.

Scientists have carried out experiments on this phenomenon where participants were asked to look at a screen with different moving objects and had them focus on a certain thing. This explained the validity of this phenomenon.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.

chavez's example shows that nonviolent protest can work well. it shows that one nonviolent man can stop a mob, which proves chavez's point and persuades people to protest nonviolently.