Which of the following most contributed to the mass production of automobiles in the early twentieth century? the increased competition with foreign nations b. the introduction of henry ford's assembly line c. an increase in the number of immigrant workers d. the increase in factory workers'

B.   the introduction of Henry Ford's assembly line

Explanation:

The theoretical idea was born with Taylorism and whoever had the idea of putting it into practice was Ransom Olds, who inaugurated his assembly line in 1901 by building his prototype called Curved Dash. However, the assembly line system became popular a few years later, thanks to Henry Ford, who, taking the idea of Olds, developed an assembly line with a superior production capacity and of which its flagship product was the Ford T However, this evolution achieved to the assembly line, would cause the public to mistakenly attribute his invention to Ford, instead of Olds. in the XXI century.

the confederate at bull run

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.