Factors that have contributed to limiting development in poor nations include all of the following except . a history of colonialism that prevented countries from producing their own goods
government leaders who accumulate personal fortunes at the expense of their nations
relying on a free market economy to stimulate economic growth
spending money on weapons at the expense of infrastructure

an aneroid barometer is different from a mercury barometer in that it provides readings that increase as air pressure increases.

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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.