Ответ:

Unfortunately, the text for question 3 is not provided. Based on general knowledge:
  • 1 End of the 19th century
  • 2 12,000 years ago
  • 3 The 16th century
  • 4 1925
  • 5 1970s
  • 6 1971
  • 7 Now
  • A Fewer than 17,000 mustangs living in America
  • B People in the USA started protecting wild horses
  • C Horses died out on the American continent
  • D Horses were brought to America
  • E 2 million mustangs living in the USA
  • F Around 37,000 mustangs living in the USA
  • G A law to protect wild horses was passed