<span>2nd Lieutenant of Artillery.</span>
Answer:
Railroads
Explanation:
Before the invention of railroads, product distribution from land was conducted by using carriage. Compared to horses, distribution using train was much faster, cheaper, and able to contained larger amount of products.
This was the reason why the government of Texas settlements at that time made a huge investment in building railroads to connect the settlements. It allows both agricultural , mining, and animal farming products that created by a settlement place to be distributed all across the state.
During the Cold War, the United States was focused on the foreign policy of containment. This idea focuses on stopping the spread of communism on an international scale. This policy explains why the US got involved in Cuba and Vietnam.
In Cuba, Fidel Castro and his followers overthrew Batista and established a communist government. Along with this, Castro established a good trading relationship with the Soviet Union. This resulted in the US attempting to overthrow Castro through the Bay of Pigs Invasion. However, this mission failed and only increased Castro's power and influence in Cuba.
As for Vietnam, the US was always interested in what was happening there, as they were afraid the communist system in North Vietnam would spread to the democratic country of South Vietnam. This act gave President Lyndon B. Johnson the power to take all necessary measures to protect US interests in Vietnam and to increase military action if needed.
On December 8, 1941, one day after the attack on Pearl Harbor, the United States declared war on Japan. This prompted Germany to declare war on the United States, which, in turn, led to the United States to declare war on Germany on December 11, 1941.
