Erathosthenes, an ancient Libyan astronomer, determined the size of the Earth by measuring what: a
The size of the moon
b
The amount of time it took for the explorer Sir Francis Drake to circumnavigate the world
c
The sun’s position at different times of the year
d
the length of the shadow the sun makes at 2 different locations on the same day of the year.

What might be something all americans believe in that unite us as a nation ?

How did government policies contribute to the beginning of the industrial revolution in great britain? o a. the british government passed laws that prevented any businesses outside the country from learning about manufacturing innovations. b. the british government established factories that produced industrial goods at low prices. c. the british government broke up joint stock companies to promote competition. d. the british government paid a large percentage of the wages earned by industrial workers.

How are the republican and democratic presidential candidates chosen? a. they are nominated by their state governments. b. each is nominated by his or her respective party. c. each is chosen by the governor of his or her home state. d. they are chosen by the house of representatives.