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You have 2 dataframes: df1 has a Country column, df2 has the index name Country; which do you use to make them into one resulting

You have 2 dataframes: df1 has a "Country" column, df2 has the index name "Country"; which do you use to make them into one resulting dataframe that has one "Country" column?

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df1.append(df2, "Country")

pd.join(df1, df2)

df1.concatenate(df2, "Country")

df1.join(df2, "Country")

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