Answer: 
Explanation:
Given
A Planet is moving at a rate of 3 cm/year
distance between planets is 1500 km
and 1 km=1000 m
1 m=100 cm
No. of years required to cover 1500 km=
I believe the answer is the first one.
They allowed respondents to identify as hispanic in 1930.
Answer:
The answer would be : A. Tribes refused to stay on the failing reservations
The reservations refer to Government's effort to replace Indian land that has been acquired for them. But these reservations failed to fulfill the basic need of the Indians that was promised by the government so a couple of tribes refused to stay in it and demanded their land back