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yes. Before he was president he was a tireless worker for Republican causes and he was generally a popular president.

woman suffrage

There are no causes of bad luck because good and bad luck do not exist. But allegadly, stepping on a crack, walking under a ladder, and knocking over a salt shaker are some of the most popular 'causes' of bad luck.

Self-motivation theories are very popular and are used for marketing and psychological causes. One of the most popular theory is one developed by Maslow according to which all human beings have hierarchy of needs.