文化 and 文明: Cultural differences and a civilization as a theme
Read dining customs and cultural transmission beside a model of an ancient civilization and development within a story.
Culture reflected and passed on
文化（ぶんか） means culture. 「食事の作法には国ごとの文化の違いが表れる。」 means “Dining etiquette reflects cultural differences between countries.” Dining etiquette reflects differences; the sentence does not rank cultures.
「地域の文化を次の世代へ伝える活動に参加した。」 means “I took part in an effort to pass the local culture on to the next generation.” The completed action is participation in an effort to pass culture on. Participation alone does not establish that all transmission was finished.
Civilization as a model’s theme or a story’s subject
文明（ぶんめい） means civilization. 「古代文明を題材にした模型を作った。」 means “I made a model themed around an ancient civilization.” The created object is a model, with ancient civilization as its theme.
「物語では海辺の文明がゆっくり発展する。」 means “In the story, a civilization on the coast develops slowly.” The slowly developing civilization belongs to the story. The sentence does not report verified historical development of a real coastal region.
Separate a theme from the action performed
Culture can be reflected in dining customs or become the object of transmission. Civilization can provide a model’s theme or develop within a story. Follow both the subject discussed and the action actually described.
In 題材にした模型, 模型 is the object made and 文明 supplies its theme. Participation, model-making, and narrative development do not establish cultural superiority or construction of an actual civilization.
In 古代文明を題材にした模型を作った, was an actual ancient civilization created?
Show the answer and why
No. A model themed around an ancient civilization was made. 文明 provides the theme, while 模型 is the object created. The sentence does not rank cultures or civilizations.