The battle of antietam affected the focus of the civil war by
changing it to southern industrialization.
changing it to the construction of a national railroad.
leading to the emancipation proclamation.
leading to the north giving up its antislavery stance.

the united states began searching for a way to reduce oil

-agarvated

the national congress's powers over the states were specific and definite: it had the sole power to negotiate treaties, declare war, and make peace. all powers not granted to congress were reserved for state governments. congress had no power to levy taxes, for example.