Ansew the questions

Question

Ansew the questions

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Answer 1

1.November, 19th, 1711. (11/19/1711)
2.Yuri Gagarin. Alexey Leonov.
3.Mikhail Lomonosov
4.January, 15th, 1731. (01/15/1731)
Сорян, но дальше искать я устала)