What does the solid line on a time line stand for

they are like markers.

Explanation:

say your looking at a time line look for the 4 numbers on it lets say 2019 vcso girls took over and in 2018 e-girls took over the trending world.

it really depends on what line your looking at.

the lines represent what times they are looking for back on the line

what are the options?

food and resources were plentiful.

women were encouraged to marry later in life so they could work in factories.