Answer:
The Mexican army attacked them. The main cause of the war was the westward expansion of the United States. All through the 19th century Americans believed it was their right to expand westward. At the time they believed they could conquer the people already living on the land and take it for the United States.
Explanation:
The answer you're looking for is the first option. I hope this helps!
Progressives were looking to change the problems of industrial society. Reformers wanted to tackle the tensions of urbanization, professors wanted new ideas to guide remedial action, and journalists exposed government corruption. Business leaders wanted to enforce efficiency and regulation, and industrial workers struggled to improve their bad working conditions. Women organized to protect their families and homes. Working condition issues - working conditions were difficult and dangerous. Workers worked around 9-12 hours/day, and wages were minimal. These conditions were not sustainable for a family, and so women and children had to work to provide for the their family.
They produce goods that others would buy. Or you provide services that others would consume and pay you.
