Between a parent and child
Answer:
I believe the answer is c, It weakened confidence that the US could win the war.
The Spanish missions in the Americas were Catholic missions established by the Spanish Empire during the 16th to 19th centuries in the period of the Spanish colonization of the Americas. ... The missions created by members of Catholic orders were often located on the outermost borders of the colonies.
Sherman Antitrust Act of 1890 was the first major piece of legislation against monopolies. The goal was to keep things competitive. They were trying to keep prices from rising due to a company or group of companies purposely withholding stock or goods to create an artificially high demand for a product and causing the price to rise.
I believe the right answer is the Thirty year war. Hope this can help :-)