Kristi has been very frustrated in her search for the perfect apartment that costs next to nothing. according to frustration-aggression theory, what would most likely increase the likelihood that kristi's frustration will lead to aggressive behavior?

The answer is "the perfect apartment burned down the day after she put down a deposit".

The frustration-aggression theory depends on research and study by Dollard et al  and recommends that all aggression is the aftereffect of feeling frustrated and baffled which is characterized as any occasion or boost that keeps an individual achieving some objective.

your question is incomplete

explanation:

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.