If USCIS asks for divorce decrees, prior marriage records, or spouse-history proof, the issue may affect eligibility dates, the three-year rule, name history, and whether the N-400 answers were complete.
Gather the notice, deadlines, official records, translations, supporting timelines, and any prior N-400 answers that USCIS may compare against the response.
Usually the safer approach is to support the explanation with documents that match dates, names, addresses, travel, tax, or family-history facts in the N-400 record.
Ask for review before sending a response if the RFE involves inconsistent records, missing certified documents, tax or family-history issues, or a deadline that is close.