Yes it is still a communist nation
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.
<span>These amendments were virtually ignored in the South and did not contribute to the equal status of blacks until the middle of the 20th century.</span>