Their slaves were escaping too often and needed a way to see if a slave had escaped.
During the time of those dynasties, China developed and innovated compass for navigation, bank notes, economic revolution and so on.
<u>Explanation:</u>
During the time of song and Tang era, the Chinese civilization developed a lot because this time led to the development of the compass for-navigation. The government also developed bank notes for the use. This was the time of economic revolution in the country.
The system of civil service examination was also given a lot of importance and criminal code was also developed. With the developments and these innovation, the civilization saw a lot of growth and development in the country and the thinking of people went forward and got modern. People improved their standards of living.
Answer: The supreme court ordered that separate but equal was unconstitutional
Explanation:
In theory then, the American President has much more power than the British Prime Minister - he is the commander-in-chief and has the power to issue executive orders which have the full force of law. However, the constitutional system of 'checks and balances' seriously circumscribes the power of the US President who often finds it really difficult to push legislation through Congress. By contrast, a British Prime Minister usually heads a government with a majority of seats in the House of Commons and the ability to pass almost any legislation that he wishes.
