Answer:
I think A
Explanation:
Flour bomb is a fragile container (e.g. a paper bag) filled with flour for the purpose to be thrown at a person or object to cause an inconvenient messy stain, called flour bombing. Flour bombs and flour bombing are a classic protest method, along with the throwing of eggs and overripe tomatoes.
I don't know if that is want you mean
The event that got the USA seriously involved with WW2 was the attack on Pearl Harbor on December 7, 1941.
A cause was that Texas declared its independence from Mexico. It changed the U.S. by the U.S. gaining California, New Mexico, Utah, Arizona, Colorado and parts of Wyoming.
Answer: After word war ii