For many years, trade and travel between the United States and China were not allowed. A 1971 Ping-Pong tournament in Japan helped to change that. An American player and a Chinese player at the tournament met, shook hands, and exchanged gifts. In response to this friendly meeting, China's leader, Mao Zedong, invited the American Ping-Pong team to visit China. This official Chinese welcome led to talks between the Chinese and American leaders. The talks resulted in opening travel and trade between the two countries.

in february 1787, congress decided that a convention should be convened to revise the articles of confederation, the nation’s first constitution. in may, 55 delegates came to philadelphia, and the constitutional convention began. debates erupted over representation in congress, over slavery, and over the new executive branch. the debates continued through four hot and muggy months. but eventually the delegates reached compromises, and on september 17, they produced the u.s. constitution, replacing the articles with the governing document that has functioned effectively for more than 200 years.

answer; i believe that the correct answer is (c) arctic tundra;

i think you may have asked this twice, but i answered one of the