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Leiutati Alexander Grahami poolt.
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Leiutas Alexander Graham Bell
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Leiutas Alexander Graham, aga seda lihtsalt täiustati teiste inimeste poolt.
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Inimesed arendasid telefone kuni jõudsid nutitelefonideni.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.