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Convert rows into columns and create table with awk

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# 8  
Old 10-03-2018
Try also
Code:
awk -F: -v OFS="\t" '
BEGIN                   {HD      = "First Name	Last Name	Age	Country"
                         for (MX=n=split (HD, HDArr, OFS); n>0; n--) SRCH[HDArr[n]]
                         print HD
                        }

$1 in SRCH              {RES[$1] = $0
                         sub ($1 FS " *", "", RES[$1])
                        }

/^ *$/                  {for (i=1; i<=MX; i++) printf "%s%s", RES[HDArr[i]], (i == MX)?ORS:OFS
                         split ("", RES)
                        }

END                     {for (i=1; i<=MX; i++) printf "%s%s", RES[HDArr[i]], (i == MX)?ORS:OFS
                        }
' file
First Name	Last Name	Age	Country
John F	Slater	31	USA
Mark	Watt	35	United Kingdom
Jim		50	Germany
Mike	Crown		Canada

# 9  
Old 10-04-2018
Thank you so much Don Cragun.. Appreciate your help.. I'll test this out tomorrow.

------ Post updated at 01:58 AM ------

Thank you so much RudiC.. Appreciate your help.. I'll also test this out.
# 10  
Old 10-05-2018
Please be aware that above proposal can handle any (up to system limits) number of fields by just adding the respective labels to the header string.
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