In 1900, after Galveston was struck by a devastating hurricane, efforts to make Houston into a viable deep-water port were accelerated. The following year, oil discovered at the Spindletop oil field near Beaumont prompted the development of the Texas petroleum industry. In 1902, President Theodore Roosevelt approved a $1 million improvement project for the Houston Ship Channel. By 1910 the city's population had reached 78,800, almost doubling from a decade before. African-Americans formed a large part of the city's population, numbering 23,929 people, or nearly one-third of the residents.
In what year did Houston's population reach 78,000?
1910

In 1852, Elisha Otis introduced the safety elevator, which prevented the fall of the cab if the cable broke. The design of the Otis safety elevator is somewhat similar to one type still used today. A governor device engages knurled roller(s), locking the elevator to its guides should the elevator descend at excessive speed. He demonstrated it at the New York exposition in the Crystal Palace in a dramatic, death-defying presentation in 1854, and the first such passenger elevator was installed at 488 Broadway in New York City on March 23, 1857.
What feature did the safety elevator display?
prevented the fall of the cab if the cable broke

Estonian language planners such as Ado Grenzstein (a journalist active in Estonia in the 1870s90s) tried to use formation ex nihilo, Urschopfung; i.e. they created new words out of nothing.
In what years did Ado Grenzstein do journalism work in Estonia?
1870s90s