Why did the united states establish diplomatic relations with china in the 1970's?

One of galileo’s contributions to science was a creating the coordinate plane system. b developing the scientific method. c improving the telescope. d inventing the astrolabe.

12which best describes how civil rights workers were treated during the freedom summer campaign? many workers were ignored.some workers were arrested or killed.some workers were treated well.o a few workers were warned to leave.-tshp---s1-mark this and returnsave and exitnextletvldoll

Which of these is the modern day result of spain colonization of the americans?