What tool did president roosevelt use to dismantle trusts and monopolies during the progressive era?

Why was the united nations established

What was the national government’s biggest concern if facing a war, under the articles of confederation? the national government had no national military. the country had grown too large to defend with a small army. the states would not back the federal government. there was no way the states would pay for fighting a war.

Was “labor violence” inevitable and unavoidable ?