<em>The Indus, Ganges, and Brahmaputra were</em> <em>important to ancient India because they were</em> <em>1. These rivers protected India</em> <em>from invasion</em> <em>2. They fertile most of indian nothern land</em> <em>northern plain</em> <em>3. They united the people of</em> <span><em>Harappa and Mohenjo-Daro</em></span>
The correct answer should be the train. Railroads were built and these helped people transfer goods and heavy things like machines all over the country. Railroads were key for everything in the 19th century.
