Frederick Christ Trump Sr. (October 11, 1905 – June 25, 1999) was an American real-estate developer and businessman. He was the father of Donald Trump, the 45th president of the United States. Born in the Bronx to German-American immigrants, Fred began working in home construction and sales in the 1920s before heading the real-estate business started by his parents (later known as the Trump Organization). Utilizing federal aid, Fred's company rose to success, building and managing single-family houses in Queens, apartments for war workers on the East Coast during World War II, and more than 27,000 apartments in New York City overall. Trump was investigated for profiteering by a U.S. Senate committee in 1954 and again by New York State in 1966. Donald Trump became the president of his father's real-estate business in 1971, and they were sued by the U.S. Justice Department's Civil Rights Division for violating the Fair Housing Act in 1973; in the case settlement, the Trumps were ordered to take several measures to curb racial discrimination. (Source: Wikipedia.org, CC BY-SA)