What river was once the center of the harappan civilization thousand of years ago in ancient india and is 2,000 miles long? (will upvote)

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an early twentieth-century ad for model home blueprints

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.