Capitalize it when it forms part ot the proper noun.
Examples:
Philippine National Bank
Philippine National Railway
Yes, "Realtor" is a proper noun and should be capitalized as it refers to a member of the National Association of Realtors, which is a trademarked term.
Capitalize legislators when it is used i n the begi n ni ng of the se nte nce.
yes
No, because it is not a proper nou n. It is a prepositio n.
No, because it is n ot a proper n ou n.
No, because it is n ot a proper n ou n.
No, because it is n ot a proper n ou n.
No, because it is n ot a proper n ou n.
No, because it is n ot a proper n ou n.
No, because it is n ot a proper n ou n.
No, because it is n ot a proper n ou n.
No, except at the beginning of a sentence because it is n ot a proper n ou n.