A type of law that state government must follow is federal law.
I believe the answer is: It caused the Roman empire to have a small and weak army.
By enforcing conscription, the majority of Roman soldiers were brought out to aid in the conquest to expand the Roman empire. When this happen, the defense for within the Capital become extremely weak and fragile. This make it easier for the invaders to attack and destroy the capital.
An NGO is a non-governmental organization. They are voluntary groups, which are independent of governments. Some do get funding from government programs, but they are not under the direct control of a government office. NGOs typically also are not-for-profit; they are not businesses aimed at making money for themselves. Their aim is to help people in disadvantaged areas or circumstances. Some NGOs give out loans to help people improve their lives. Typically they will have more flexible or workable loan arrangements for a needy borrower than might be available from typical governmental sources of loans or traditional bank loans. For instance, there are NGOs that will grant small business loans without requiring collateral. Or there are NGOs that do microlending -- very small loans in developing countries to help someone get started with a very basic business. FINCA and Hope International are both examples of NGOs that do this sort of microlending.
