Complex sentence: From 1961 to'62, a television headquarters was established in Lahore and several pilot transmission tests were taken by Rahman's team while many television divisions were established throughout Pakistan, including East-Pakistan.
Split into simpler sentences: From 1961 to'62, a television headquarters was established in Lahore and several pilot transmission tests were taken by Rahman's team. Subsequently many television divisions were established throughout Pakistan by this team, including East-Pakistan.