B, atomic bombs is the correct answer
The flood made silt near rivers and silt made land extremely fertile for farming.
Answer: True
Explanation: Federalism decentralises politics and policy-making by devolving powers from what would be one central executive down to senators and governors. This means that policies which are debated and formulated are subject to both the central national government and the separate state governments.
<span>c running the army is the correct answer</span>