During the 1960s, a federal civil rights act became necessary because

the president did not support civil rights.

it was the only way to end jim crow laws.

northern states had passed different civil rights laws.

southern states had ended discrimination.

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.