This would be the opportunity cost: the cost on missing out on different opportunities once one opportunity is chosen. So if you choose A over B, the opportunity cost is the gain you could have had if you'd chosen B (even if you anyway couldn't have chosen both in the first place!)
Lots of trade and inventores
Monarchy is the form of government that serves the interests of royal family members.
Monarchy is the oldest form of government in which, a king or queen is Head of State. As Head of State, the Monarch undertakes constitutional and representational duties. The monarch is an individual ruler who functions as the head of state and who achieves his or her position through heredity.
The lack of a stable government, dictators, and civilian uprisings.