Answer:
1960's
Explanation:
Unmanned orbits came first because they needed to test and see if it was safe before sending an actual crew into space. Manned orbits came second and was first done in the 60's
The decade that saw manned satellites being launched into orbit was the 1960s.
After the successful testing and launching of unmanned satellites into space in the 1950s, manned satellite launches followed in the 1960s.
This would spark a whole new phase in the space race between the Soviets and the Americans.
In conclusion, option B is correct.
Find out more on Manned satellites at https://brainly.com/question/1069202.
