AHC: Make the Roman Empire the largest in human history

As the title says. The short answer to this is to prevent any possible PoDs that can lead to the rise of empires such as the British or Mongols

How possible it would be to have Rome possess the largest empire the world has ever seen? Rome doesnt have to keep all these territories

Bonus points for modern, surviving Rome
 
The Romans using the canal of the pharaohs to expand into the Indian ocean, or not destroying Carthage and using their naval skills to explore west Africa would both be good starts.
 
Emperor Hadrian relocates the Roman capital to Londinium.

The position of Emperor or Empress survives the centuries despite Anglo-Saxon and Norman invasions. Whoever rules England is considered the Emperor of Rome.

England and Britain eventually unite, and this Roman Empire develops similar to British Empire of OTL and goes on to become the largest empire in history.
 

Deleted member 97083

Persia, like many areas in the Near East, is one of those regions that has changed hands between empires innumerable times through centuries. And through most of the ancient and medieval eras, Persia was ruled from Mesopotamia rather than from its own Iranian Plateau. I would argue that a Roman conquest of Persia is in fact possible.

Roman Mesopotamia and Persia would add quite a significant landmass to the Roman Empire.
 
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