1: Motorola DynaTAC 8000X-was the first handheld cellular phone that allowed people to make longer distance calls than just a landline phone. It did not require any lines or cords to be attached to make a call. The first ever cellular phone call was made in 1973, using this phone, by Dr. Martin Cooper.
2: VS-300-On September 14, 1939, the VS-300, the world's first practical helicopter, took flight at Stratford, Connecticut. Designed by Igor Sikorsky and built by the Vought-Sikorsky Aircraft Division of the United Aircraft Corporation, the helicopter was the first to incorporate a single main rotor and tail rotor design.
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Answer:
1: Motorola DynaTAC 8000X-was the first handheld cellular phone that allowed people to make longer distance calls than just a landline phone. It did not require any lines or cords to be attached to make a call. The first ever cellular phone call was made in 1973, using this phone, by Dr. Martin Cooper.
2: VS-300-On September 14, 1939, the VS-300, the world's first practical helicopter, took flight at Stratford, Connecticut. Designed by Igor Sikorsky and built by the Vought-Sikorsky Aircraft Division of the United Aircraft Corporation, the helicopter was the first to incorporate a single main rotor and tail rotor design.
3:Earth was unrecognizable from its modern form.