Group A I believe
Hot-air balloon flights pioneer air travel
Aviators fly gliders—heavier-than-air aircraft with no engines
Development of engine-powered machines with propellers and lightweight motors
First-ever flight across the English Channel
Construction of the first military airplanes
<span>World's first scheduled commercial airline</span>
<span>that the U.S. pay money before talks could begin</span>
Elaborate drainage system
The harappan civilization is also known as the Indus river valley civilization. known as the earliest producers of cotton, the city featured an elaborate drainage system, which could have been necessitated by prosperity and effort to control the outbreak of river-line diseases.
<em>Answer:</em>
Calcutta, the main centre of British Raj till then, had fallen out of favour as it had become politically unstable.
The British government wanted to shift the capital and Delhi won on many counts. It was closer to Shimla, the summer capital and was well connected by rail.
In the next 20 years, New Delhi would be carved out of scattered villages and a rocky ridge inhabited by jackals. The new capital and its imposing buildings would come to define Delhi for the next 100 years. The capital, however, would keep growing beyond the garden city planned by Edwin Lutyens - and continues to grow.
