During the Klondike Gold Rush, he moved to the Yukon and made his fortune by operating a restaurant and a brothel for miners in Whitehorse.

As he had purportedly immigrated to the United States in order to evade conscription, the Bavarian Government stripped him of his citizenship in 1905.

Trump worked as a barber and manager of a hotel and was beginning to acquire real estate in Queens when he died in the 1918 flu pandemic.

During periods of war and anti-German discrimination in the United States, Trump's son Fred later denied his German heritage, claiming his father had been a Swede from Karlstad, Sweden.

[12] After being sick with emphysema for 10 years, Trump's father, Christian Johannes, died on July 6, 1877, at the age of 48, leaving the family in severe debt from medical expenses.

[6]: 28  While five of the six children worked in the family grape fields, Friedrich was considered too sickly to endure such hard labor.

[6]: 30–31  As a result of Trump fleeing mandatory conscription required of all citizens, a royal decree was later issued banishing him from the country.

As he had not yet served the mandatory military duty of two years in the Kingdom of Bavaria, this immigration was illegal under Bavarian law.

[3] Trump lived with his relatives on the Lower East Side of Manhattan in a neighborhood with many Palatine German immigrants, at 76 Forsyth Street.

With his life savings of several hundred dollars, he bought the Poodle Dog, which he renamed the Dairy Restaurant, and supplied it with new tables, chairs, and a range.

Biographer Gwenda Blair called it "a hotbed of sex, booze, and money, [it] was the indisputable center of the action in Seattle.

[6]: 59 On February 14, 1894, Trump sold the Dairy Restaurant, and in March, he moved to the emerging mining town of Monte Cristo, Washington, in Snohomish County north of Seattle.

[6]: 59  In Monte Cristo, Trump chose a plot of land near the later train station that he wanted to build a hotel on, but could not afford the $1,000-per-acre fee to purchase it.

[6]: 61 In July 1894, Rudebeck filed to incorporate the land and sent an agent to collect rent; this was apparently unsuccessful since the people of Monte Cristo did not pay attention to legal titles.

[6]: 71 Years of mining had revealed that there was not nearly as much gold and silver in Monte Cristo as had once been believed,[6]: 68  and in August 1894, Rockefeller pulled out of most of his investment in the area, creating the "Everett bubble burst.

Trump suffered both from a shortage of workers and reduced business, although he had been one of the few people to make money in Monte Cristo.

[6]: 79 He bought all the necessary supplies, sold off his remaining properties in Monte Cristo and Seattle, and transferred his 40 acres in the Pine Lake Plateau to his sister Louise.

[6]: 80  In the winter following Trump's departure from Monte Cristo, the town suffered some of the worst avalanches and floods in its short history, and this time, Rockefeller refused to reconstruct the almost vital railroad to Everett.

[6]: 84 In May 1898, Trump and Levin moved to Bennett, British Columbia,[17] a town known for prospectors building boats in order to travel to Dawson.

In Bennett, Trump and Levin opened the Arctic Restaurant and Hotel, which offered fine dining, lodging and sex in a sea of tents.

[6]The Arctic House was one of the largest and most extravagant restaurants in that region of the Klondike, offering fresh fruit and ptarmigan in addition to the staple of horse meat.

[citation needed] The Arctic was open 24 hours a day and advertised "Rooms for ladies", which included beds and scales for measuring gold dust.

Around that time, the local government announced the suppression of prostitution, gambling and liquor, though the crackdown was delayed by businessmen until later that year.

In light of this impending threat to his business operation, Trump sold his share of the restaurant to Levin and left the Yukon.

"[6]: 94  He quickly met and proposed to Elisabeth Christ (1880–1966), the daughter of a former neighbor; she was eleven years younger than Trump.

Officially, they found that he had violated the Resolution of the Royal Ministry of the Interior number 9916, an 1886 law that punished immigration to North America to avoid military service with the loss of Bavarian and thus German citizenship.

[6]: 99  In February 1905, a royal decree was issued ordering Trump to leave within eight weeks due to having emigrated to evade military service and failing to register his departure with the authorities.

"[6]: 116 [23] Contrarily, according to his death certificate, Trump had been attended by a doctor since May 23, 1918, and died on the morning of May 30 from pneumonia and, secondarily, nephritis.