Why does a higher investment in capital resources result in a higher GDP?

Capital Investment's Relationship to Gross Domestic Product (GDP) ... Additional or improved capital goods is intended to increase labor productivity by making companies more productive and efficient. Newer equipment or factories leads to more products being produced, and at a faster rate.

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answer: b has a great day

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.