Why was one nation under God added to the pledge of allegiance?

Was General George Washington the American commander at the Battle of Yorktown? What was one difference between Mary Lease and Willian Jennings Bryan? Why did the framers explicitly grant the powers of currency borrowing and bankruptcy to congress? Who was the woman who taught theseus how to escape from the labyrinth by making his way with string? What is an agreement between states called? What was the name of the town where Lee surrendered to Grant? Why do Americans use pencils instead of mechanical pens? How did the British government try to stop smuggling? Which Simpson's character is named after the fomer US president Richard M. Nixon? Where do spending requests for the general welfare of the us usually come from? How does increasing number of interest groups illustrate the concept of pluralism or hypluralism? What is the diffence between government and state? How does congress impact your life? To offer as an election candidate? What is the Difference between developed and under developed countries? Who saved valuable papers and a rather famous painting when the British burned Washington? Who has the authority to accept or reject presidential nominations? Who speaks on behalf of the American people in times of tragedy? What part of government has the power to try impeachment? Where do all erevenue bills originate?

Why was one nation under God added to the pledge of allegiance?