The automobile industry's success came through the following:

2. A mass production assembly line.

3. Television advertising

4. Making the same models of car year after year.

5. Making cars more expensive.

A. A mass production assembly line.

Explanation:

By having an assembly line, the production of cars became much more efficient, since the work was split up between workers and moved from person to person

c) legal battles last five weeks after the election due to the narrow victory in several states.

mount st. helens in washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. ash from the volcanic eruption fell as far away as minnesota. seismic activity at mount st. helens, which is 96 miles south of seattle, began on march 16.