This would be an oligarchy
Answer:
The change in breastplates and helmets contribute to decline of the Roman Empire by weakening the the military. It weaken them because the removal of it promote laziness and negligence of training and the such. It also removes the protection against ranged weapons which caused many casualties.
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Because all colonies had to agree.
Answer:
tobacco
It didn't take the colonists long to realize that economic specialization would be the way to go, and tobacco became a cash crop for the colony.
Explanation: