He wanted America to be independent and didn’t want to join conflicts with other countries.
No, I do not think Donahue supports devolution. Devolution is defined as the transfer or delegation of power to a lower level, especially by central government to local or regional administration. Donahue believes the state governments nowadays have way too much power in our society and the power of our federal government is declining.
It enabled civilizations around rivers to emerge because it enabled them to grow their own food in fertile lands. It also enabled class division to emerge into those who dealt with trade and those grew food. It also enabled rise of political system like monarchies with rulers and dynasties.