Split multiple columns into one row

Ah, now it is clear. Here is one of many ways to do that

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8svMzkksjsnzyk+NyQvJz1XSUTI0iskzNInJM7JIBPLcU4tyE/MqY/LcihLzkoGKggsSM/OUYmMB", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Name = _t, #"House Number" = _t, Country = _t]),
    mix = List.Zip({Text.Split(Source[Name]{0},"#(lf)"),Text.Split(Source[House Number]{0},"#(lf)"),Text.Split(Source[Country]{0},"#(lf)")}),
    #"Converted to Table" = Table.FromList(mix, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    #"Extracted Values" = Table.TransformColumns(#"Converted to Table", {"Column1", each Text.Combine(List.Transform(_, Text.From), "|"), type text}),
    #"Split Column by Delimiter" = Table.SplitColumn(#"Extracted Values", "Column1", Splitter.SplitTextByDelimiter("|", QuoteStyle.Csv), {"Name", "House Number", "Country"})
in
    #"Split Column by Delimiter"

How to use this code: Create a new Blank Query. Click on "Advanced Editor". Replace the code in the window with the code provided here. Click "Done". Once you examined the code, replace the entire Source step with your own source.