What was needed in order for the constitution to be ratified? a. a meeting of congress b. a bill of rights c. a new president d. a revolution

Which of the following could affect the human population? a hurricane makes landfall on an uninhabited island. a deadly virus emerges that can pass from human to human. a civil war breaks out in italy. a solar eclipse occurs.

Powers of states the first letter of the answer is r.

Which 19th century technological advancement would best allow farmers along the mississippi river in iowa to quickly transport their crops to buyers in louisiana?