The budgets of both Castile and Aragon had been in poor condition for some time. The government had expelled the Jews in 1492 and the Muslims of Granada in 1502, moves that undercut lucrative trades and businesses. Ferdinand and Isabella had been forced to borrow money to pay troops during and after the Reconquista, and Spanish military obligations had only increased since then. A large number of troops were required to maintain stability in recently conquered Granada, threatened by revolt from the maltreated moriscos (former Muslims who had converted to Christianity) and frequent naval raids from Muslim nations along the Mediterranean. Additionally, Ferdinand had invaded and occupied the Iberian part of Navarre in 1512, and forces were required to garrison it against Navarrese revolts and French armies. Very little money was left to pay for the royal army in Castile proper, let alone service foreign debts. The corruption in the government since Isabella's death only made the budget shortfalls worse.