Natural disasters such as an earthquake and lake texcoco flooding, then tha spanish came and spread disease.
Answer:
Mary Elizabeth Lease was an american lecturer,writer, and was a political activist in 1888
She could've learned that good things don't last forever, or that it's best to address any problem no matter how small in case it turns out to have a lasting effect
I believe the answer is grivinesss
The German Use of submarine warfare caused tension to increase between the United States and Germany. Their submarines were called U-Boats.