A. Transcontinental railroad
The stairs at Machu Picchu are also known as the "stairs of death". These stairs are made of large rocks, these stairs are made at the edge of the cliff providing a breath taking view.
<h3 /><h3>What is Stairs?</h3>
Stairs are the steps directed in an inclined position to reach the upper level, they are made for the ease to climb, stairs are now being exchanged with elevators and escalators.
Machu Picchu stairs have 1600 steps, these steps lead the way to Huayna Picchu (a cliff). The highest level is about 2700 meters, these stairs are difficult to climb but still is a tourist destination.
These stairs were made to protect Sapa Inca and the family from invaders these stairs were made, also the city of Machu Picchu was saved by this from the invaders.
Machu Picchu is a city in the country Peru, South America. It is a favorite tourist destination
Learn more about South America at brainly.com/question/27079423
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a. rose
The quality of life of the Americans has improved because of the Great Society introduced by President Lyndon B. Johnson in 1964. It aims to put an end to poverty and racial injustice. High school graduation rates also rose following the implementation of several Great Society programs.
The involvement of the United States in the Vietnam war eliminated some of its programs, but others like Medicare, Medicaid, the Older Americans Act and federal education funding, remained.
Answer: A . Hoovervilles were dirty and crime-ridden
Explanation: Hoovervilles were typically grim and unsanitary.
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