Which of the following events happened last? A. The election of Abraham Lincoln

B. The firing on Fort Sumter

C. The founding of the Confederate States of America

D. The secession of the first group of southern states

Nwhich situations is the principle of cross-cutting relationships useful in determining relative age? check all that apply. a fault breaks through sedimentary layers. sedimentary layers form and then are tilted. igneous rock forms between sedimentary layers. sedimentary layers form over millions of years in a lake bottom. lava flows form on top of one another from several eruptions over time.