By ocean currents is the answer to your question
Religious and ethnical problems.
It was one of the largest empires of the world with many different ethnicities. The problem was to unite people under one rule.
Another problem was communication. It was hard to transfer knowledge and news to all parts of the empire because it was too large.
Answer:
Government policy makers and business partners have focused infrastructure efforts on creating a downtown work environment that is positive for economic development.
Explanation:
Businesses and governments have to work in partnership to create connected urban spaces and promote local economic development by expanding revenues for existing companies and creating new businesses.
With Rome. Silk Road was linking China with the West and it carried goods and ideas between the two great civilizations of Rome and China.