A trial court in the federal system is the US Supreme Court.
the US Court of Appeals.
the US Court of Common Pleas.
the US Court of Claims.

the US Court of Claims.

Explanation:

just took the test review

Explanation:

The court of claims, unit test review, edge 2021

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.

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b gas tractor

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c and negotiated lower prices for farm equipment and supplies

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d the grange

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c over 15,000 bankrupt businesses

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c people became more self-sufficient