Answer:The structures where built by men. Mostly slaves in that time
The methods they used where giant sleds to drag supplies and many men.They rolled boulders and carried the items.They had also used horses to carry the items.
Explanation:
It takes long to.e for 1828
Almost half of all Mexican territory was given to the United States as a result of the Mexican-American War. The Mexican-American War officially ended with the Treaty of Guadalupe Hidalgo. In this treaty, Mexico agreed to giving up a significant portion of their land (known as the Mexican Cession). This portion of land contained many states that the US has today including: California, Arizona, New Mexico, Utah, and Colorado.
Essentially, anything west of the Rio Grande became part of the United States.
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The existing political authority was based on absolutism and the people in charge were monarchs who exploited the people and made many bad mistakes which harmed their respective countries. They also only cared about their personal wealth and lives and didn't care about the people at all.
The french revolution wanted to end this and they were inspired by enlightenment philosophers who believed that power comes from the people and not from the divine will that chooses monarchs. This inspired people to change the government and put in a new republican government which would be based on suffrage and end of tyranny.