'public credit' and 'have credit for'

[kjc0123]

What's the meaning of 'public credit' and 'have credit for' in the following sentences?

Hamilton sought a strong central government acting in the interests of commerce and industry. He brought to public life a love of efficiency, order and organization. In response to the call of the House of Representatives for a plan for the "adequate support of public credit," he laid down and supported principles not only of the public economy, but of effective government.

Hamilton pointed out that America must have credit for industrial development, commercial activity and the operations of government. It must also have the complete faith and support of the people. There were many who wished to repudiate the national debt or pay only part of it. Hamilton, however insisted upon full payment and also upon a plan by which the federal government took over the unpaid debts of the states incurred during the Revolution.

[Marsh]

Public credit is, I think, the same as the National Debt, money borrowed by the government.  It needs to be properly financed rather than the government just printing money. 

Must have credit means must be able to borrow money (for the reasons given later in the paragraph).

[Peter Pedant]

Heavens what a week

Havent been on line kay-jay, but I thought i should wish you a good xmas and prosperous new year