Why were there so many earthquakes before the great 1906 earthquake and so few after.

Who issued the ruling for the supreme court? dred scott roger b. taney abraham lincoln john c. calhoun

If one thinks illegal immigrants should become american citizens, should they become american citizens automatically or should there be a waiting period? if there should be a waiting period, explain why.

Which impact did the civil war have on the spread of disease in texas a. disease decreased bc people left the area to fight in the war b. disease increased bc medicine was in short supply. c. disease increased bc many new diseases were brought to the area d. disease decreased bc confederate doctors distribute new medicines to local communities