Yes, the Constitution can be changed.
Generally how they change the Constitution is by adding more amendments (usually to override a previous one, as of the examples for slavery and spirits (wine)).
To change, the House of Representatives & Senate must have 2/3 majority votes for the change.
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Yes as that is why the name “the American dream” became a thing due to so much lack of jobs and opportunity in their country forcing then to migrate and find a way to earn a living
Answer: Chinese government remained unchanged.
Explanation:
We still have a communist chinese government till this day.
Answer:
He took land from patricians and gave it to the plebeians. He increased the size of the Senate to address financial issues. He grew the size of the military to provide more jobs.