C- nelson Mandela; the rest of the answers for the pretest are:1)b 2)ac 3)c 4)a 5)a 6)c 7)b 8)a 9)bde 10)d 11)d 12)a 13)d 14)d 15)a 16)c 17)bc 18)c 19)d 20)c hope this helps!
While soviets rejoiced in the attainment of the sputnik system, Americans feared soviet advancements in science.
<h3>What advancements made Sputnik possible?</h3>
Sputnik made the possible to study the radio wave transmission and density of the atmosphere easy. He also supported the scientist to learn to track objects in orbit. He encourages testing satellite pressurization. This made pressure to America for advance of technology.
Thus, option A is correct.
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Ans: The Fugitive Slave Act of 1850 was passed by Congress as one provision of the Compromise of 1850. The harsh terms of the act angered many Northerners and contributed to the sectional division over slavery that led to the American Civil War.
Explanation:
Finnell cooperative learning would double the chances of a successful crop by collecting quite enough water as possible: use terraces and texture plants to mitigate runoff; holding, instead of extracting, soil nutrients on the ground after a crop; weed control, based on soil properties.
