Answer:
here
Explanation:
Before the passage of the 26th Amendment in 1971, 21 was the minimum voting age in most states—and thus served as the age of adulthood in most areas of law. Congress lowered the nationwide voting age to 18 as a response to unrest and passionate debate about the Vietnam War.
Answer:
Geodesy is the science of measuring and studying Earth's orientation in space , geometric shape and gravity field.