There was great tension between pro-slavery and anti-slavery representatives over how new territories won would handle the issue of slavery.
The Mexican-American War and the 1848 Treaty of Guadalupe Hidalgo, forced onto the remnant Mexican government, drew some criticism in the U.S. for their casualties, monetary cost, and heavy-handedness. Furthermore, the question of how to treat the new acquisitions also intensified the debate over slavery and in many ways inflamed it, as potential westward expansion of the institution took an increasingly central and heated theme in national debates preceding the American Civil War.
The correct answer to this open question is the following.
The conclusion can be drawn from this comparison above is that in the Roman Empire times, women had limited rights and were considered less than men. The fact that women were not citizens of Rome, Roman men believed a woman had to be under the protection of a guardian, such as her father or husband, or that women were thought to be incapable of directing their own activities, shows that men felt they were superior and undermined the capabilities and strengths of women. However, to their convenience, men allowed women to run businesses, have a job to support the family, or inherit wealth.
Answer:
Here are some factors that have caused the situation:
more cars
more SUVs
more factories
more people
more animals
