Answer:
Naturalization, Citizenship by Marriage, Citizenship by Birth, Citizenship Through Military, and Citizenship Through Parents
Step-by-step explanation:
Naturalization: Take the tests and become a citizen through the naturalization process
Citizenship by Marriage: Marry a U.S Citizen
Citizenship by Birth: Be born on U.S soil (Includes military bases in other countries)
Citizenship Through Military: Join the U.S military
Citizenship Through Parents: Be born to U.S Citizen parents (even if you are born in another country)