Is the civil war ended in 1865 a compound or complex sentence

The graph represents price and output quantities under a monopoly what price will the monopolist firm set

The party that has the second most members in the house but not the most

When an amendment is ratified by three-fourths of congress or by three-fourths of state legislatures, it becomes part of the federal constitution, and all states—even those that did not ratify the amendment—must follow the laws in the new amendment. true or false