What was the domestic impact of World War I?

Soon-yi's house has a hexagonal window made up of six identical equilateral triangles as pictured below.

What does the term “escalation” refer to?

Which of the following is a likely reason that someone today might decide to move from a city in the midwest to the south? a. the decline of manufacturing in the midwest b. the many high tech jobs available in the south c. urban overcrowding in the midwest d. higher housing costs in the south