Answer: d. the Spanish-American War.
Explanation:
The excerpt is part of President Roosevelt´s first State of the Union address, in 1902, when he stated firmly that the canal was a prime priority for his government. The Spanish-American War had proven that a faster water crossing between the Us´s east and west coast was very much needed.
By 1903 the United States had helped Panama become independent from Columbia, and bought a 10-mile wide piece of property in order o build the Panama Canal.
The main tactic the Persians uses was fighting. Now, i'm NOT saying they were good fighters. However, they did have a bigger number of people to fight for them while all around the empires had so little people to fight for them. Hope this helps :)
Answer:
improve methods of producing iron,which was used to make steam engines,bridges and railroad
