Why would Rome be so upset about Carthaginian rise in power in Spain if they were using that money to pay the Romans their war indemnity (reimbursement)?​

Yes it was hope that works

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

Not true it depends on the person