Answer:
what weaken his dynasty was
The answer is Earth was in the center of the universe and everything orbits it.
Answer:
The Empire was too large for one person to rule.
Explanation:
In 285 AD, Emperor Diocletian decided that the Roman Empire was too big to manage. He divided the Empire into two parts, the Eastern Roman Empire and the Western Roman Empire. Over the next hundred years or so, Rome would be reunited, split into three parts, and split in two again.
Sponges and sea-slugs and other invertabrates