The arrival of large numbers of people.
To protect territory from native Americans and prevent border violations by border thieves
Answer:
B
Explanation:
The Battle of San Juan Hill
Causes: The problems caused by industrialization, urbanization, immigration, and political corruption. Reconstruction in general after the Civil War also contributed - people were just trying to improve America.
Effects: The 18th Amendment (prohibition of alcohol), the 19th amendment (women's right to vote).
The main similarity between the Teller Amendment of 1898 and the Platt Amendment of 1901 was that they were both issued during the Spanish American War and had to do with American intentions in Cuba.