Answer:
language barriers,
unfriendliness of the people
poor transport system
poor communication system
illeteracy
Answer: it depends on your skill. but most tests are not easy unless you are Isacc Newton or Albert Einstein or Hawkings.
Explanation:if you are very sure you are prepared for this test then you should go for it. hope you get an A+
The correct answer is: the Chinese invented the odometer, which was used for measuring distances traveled.
An odometer or odograph is an instrument used for measuring the distance travelled by a vehicle, such as a bicycle or car. The device may be electronic, mechanical, or a combination of the two. Early forms of the odometer existed in the Ancient China.
Harry Trumanappointed ER to the first American delegation to the United Nations. She represented the U.S. at the UN from December 31, 1945, until December 31, 1952, when the newly elected President Dwight Eisenhower requested her resignation. She was the only woman in a six-person, bipartisan delegation.