This line graph shows the United States population from 1800 to 2000. What change does this graph show from 1800 to 1880? US Population 350 The US population increased slightly during that time. The US population increased sharply during that time. O The US population decreased slightly during that time. O The US population decreased sharply during that time. 250 Millions of People 200 150 100 50 0 2000 1800 1840 1920 0961 Year was​