The US Congress must approve Constitutional Amendments by a 2/3rds majority. The previous answer (The Supreme Court) is incorrect. The Supreme Court has powers of Constitutional review (given in the Marbury vs Madison decision, commonly credited as the template of what is today considered the core of the power of the Supreme Court), which means they may find laws or precedents inconstitutional and revoke their power (i.e., Brown v Board of Education, which found "separate but equal" to be inconstitutional). This is not the same as creating Constitutional amendments.
Congress approves 3/4State assemblies 3/4
the change of the Constitution is an amendment
The 2nd Amendment refers to the 2nd Amendment of the Constitution. It does not compare to the Constitution, it is part OF the Constitution.
Fourteenth Amendment of the Constitution of Ireland happened in 1992.
Congress approves a territory's proposed constitution before it becomes a state.
The Constitution 7th Amendment The Constitution 7th Amendment The Constitution 7th Amendment
A revision of, or addition to, a constitution
When the constitution is changed it is called an amendment.
Thirteenth Amendment to the United States Constitution
Third Amendment of the Constitution of Ireland happened in 1972.
Eighteenth Amendment to the Constitution of Pakistan happened in 2010.
Additions to the constitution are called amendments. The first amendment was :