As states and empires increased in size and contacts between regions multiplied, religious and cultural systems were transformed. Religions and belief systems provided a bond among the people and an ethical code to live by. These shared beliefs also influenced and reinforced political, economic, and occupational stratification. Religious and political authority often merged as rulers (some of whom were considered divine) used religion, along with military and legal structures, to justify their rule and ensure its continuation. Religions and belief systems could also generate conflict, partly because beliefs and practices varied greatly within and among societies.
The correct answer is C) the Burlingame Treaty.
The treaty that improved U.S. relations with China was the Burlingame Treaty.
The Burlingame-Seward Treaty of 1868 improved the conditions established on the Treaty of Tianjun of 1858. With the signing of the new Burlingame Treaty, the relationship between the United States and China improved. Immigration restrictions were modified and the US federal government diminished its intromission in Chinese affairs.