Yes he was! In the battle of Texas!
Supply is how much there is of a product. Demand is how much the product is wanted or needed by consumers. When supply is low, & demand for the product is high, it forces the price to go up.
A budget deficit occurs when government expenditure is greater than revenue. When this happens the government is now forced to acquire loans to remedy the deficiency and as such national debt grows. A budget surplus occurs when revenue is greater than expenditure. When this occurs there is no need to get more loans and the surplus can now be used to service the national debt; thus reducing it.