What is meant by a state's infrastructure?

Infra- means "below;" so the infrastructure is the "underlying structure" of a country, state, etc. and its economy, the fixed installations that it needs in order to function. These include roads, bridges, dams, the water and sewer systems, railways and subways, airports, and harbors.

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its b i looked it up hope u get it right wish u luck

answer; ///biological psychologists;