Why were the Democrats the "underdogs" in this election, as they had been since 1868 how close was Democrat Samuel tilden to winning the election?

Which statements explain reasons why unconformities occur? check all that apply. rocks along a fault break and move. igneous rock forms at earth’s surface. rocks erode and sediment is deposited. no sediment is deposited over a long time. igneous rock forms between sedimentary layers.