Egypt,rome,chinese are ancient civilisations.Great Britain is medieval civilisation.India has never been a single country.So conflicts! If conflicts further conflicted,it becomes SIMPLE,SWEET & TRUTH.

Dome is on centre top.
Arch is between walls/pillars.
2)Metallurgy is by iron & steel,copper,bronze metal ages.
Loh purush is sardar vallabhbhai patel.