They were looking for the "Northwest Passage" to the sea. Or basically seeing where America ended in the northwest side of the country.
Hope this helps :)
The answer is A ( I have to add more but give me a thanks
Answer:
B. Harappa Hairpin
Explanation:
Indus Civilization, additionally known as Indus Valley Civilization or Harappan Civilization, the earliest far-famed urban culture of the Indian landmass.
