The first form of grants-in-aid from the national government to the states was

The first form of grants-in-aid from the national government to the states was land grants. The land grant is an award of real estate , a gift of land. The recipient is given this grant  with the requirement that a public purpose, as defined by legislation. The purpose of the land grand is enabling work.

The first form of grants-in-aid from the national government to the states is land grants. These federal grants-in-aid prevent the violation made towards the constitution and grant the access of money and other resources to the state authorities without any confusion. This brings the federal and state government together as the state will look out for the federal requirements.