It had no executive branch to enforce the laws of the land, congress has no power to tax individual states, and each state printed its own currency.
It crippled them economically forcing them into cheap labor
Most of the time it disenfranchised them
The black codes were passed which were essentially a set of restrictive laws passed during johnsons presidency which in a lot of states forced black people to sign labor contracts otherwise they would have been fined or jailed or sold back into basically slavery
The correct option is "Few children knew how to read printed material."
The care of war orphans was an important function for local organizations, as well as for the state and local government. A typical state was Iowa, where the private "Association of Iowa Soldiers' Orphanages" operated with funds from the legislature and public donations. Orphanages were created in Davenport, Glenwood and Cedar Falls. The state government financed the pensions of the widows and children of soldiers. Orphan schools were created to provide housing, care and education for the orphans of civil war soldiers. They became a matter of state pride, orphans were exhibited around demonstrations to show the power of a patriotic education.