Naturalization: This is the process by which an immigrant becomes a citizen of a new country. It's like when a new student officially becomes part of your school after completing all necessary paperwork and requirements.
Xenophobia: Xenophobia refers to fear or hatred towards foreigners or strangers. It’s like if some students at school disliked or were afraid of new students simply because they were unfamiliar.
Melting Pot Theory: This theory suggests that societies with many immigrants will blend together over time, creating a sort of cultural "melting pot". Imagine if all the different cliques at school started mixing until you couldn't tell one from another - that's what this theory proposes.