William Hoover invented the vacuum cleaner in the early 20th century.
I am pretty sure that it is the early 20th century
Science and theory in the early 20th century?.
Yes, because he was the "Big Government" type of president, who lived in the Progressive era in the early 20th Century.
The dollar diplomacy was a policy implemented by President William Howard Taft in the early 20th century.
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Actually, Baseball was brought by the American Marines stationed and ultimately colonized Nicaragua in the early 20th century. Nicaragua was taken over by an American crazy named William Walker who declared himself King in the early 20th century.
William Morris impacted the 20th century with his designs. In an age of factory and industrialization, he returned to the natural look of furniture.
The Steamboat
Radio was not an important invention in the early 20th century. Instead it was developed by Heinrich Hertz in the 18th century. The cotton gin (APEX)
William "Billy" Sunday (1862-1935) was a baseball player in the 1880s and a popular evangelist during the early 20th century.
In the early 20th century.
Chad, Niger, Mali, and Mauritania were know as the French Sahel in the early 20th century