<u>Answer:</u>
Supreme court is the guardian of the constitution however, through constitutional amendment, the constitution can be altered or changed.
<u>Explanation:</u>
Due to the rigidity of US constitution only,27 amendment could be carried till now. First constitutional amendment was ratified during the year 1791 granting the rights to religion, speech, assembly etc. This was one among the first ten amendment which were called the bill of rights.
This process of amending the constitution is very long and complicated. It requires the special majority. This is done to uphold the rigid nature of the constitution.
The answer is A only because immigrants have increased and so has boarder security.
One key similarity would be that they all started off as colonial powers ruled by larger power in Europe. Most of these nations gained independence through revolution as well, while a smaller amount gained it by the European state giving the colony independence (canada, Jamaica), Cuba was also technically both (revolution against spanish to be ruled by America, given Independence by America). A big difference is that most of North america was ruled by the British and the French, while South and Central America were settled predominantly by the Spanish and Portuguese. This resulted in huge differences in culture, including language (English/french vs Spanish/Portuguese) and religion (Protestantism vs Catholicism).