Mumbai, Kolkata, and Delhi are three major cities in India.
Answer:
I am assuming that people traveled by walking, on horse, in a carriage, by boat, and steam engine.
Explanation:
Answer: Claim
This is an example of a "claim." A claim is an assertion that states that something is the case, or that something is a fact. It is typically provided regarding a situation that is in dispute. In this case, most people would argue that time will help us reach the solution to our problems. The speaker is disputing this assumption, by saying that the solution is in our hands.