When the 55-year-old executive sat in his office thinking about his 25-year-old colleague with two tattoos, a piercing, no watch, and a shameless propensity for chatting up the boss, he could have been using selective perception to screen out how effective an employee the younger man actually was?

we both have laws and checks and balances.

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.

answer; education;