As a result of the automobile industry, detroit became

the united states’ fourth-largest city by 1930.

the united states’ largest city by 1930.

the united states’ smallest city by 1930.

the united states’ fourth-smallest city by 1930.

The correct answer is A) the United States 4th largest city by 1930.

As a result of the automobile industry, Detroit became the United States 4th largest city by 1930.

In those years the city of Detroit was considered the birthplace of automobiles in America. It got the name of "Motor City." Henry Ford history as a car manufacturer impacted the economy of Detroit. By 1930, the population in Detroit had increased to 1.9 million people, making it the 4th largest city in America. Detroit and Henry Ford reinvented the life in the United States city with the using of cars and the construction of more roads.  

b toward the volcano.landward. the landward side of something is the side nearest to the land or facing the land, rather than the sea.