The invention of the chronometer was important because: a. it was used to calibrate navigational tools. b. it allowed the calculation of longitude after weeks at sea. c. it allowed the calculation of latitude at sea and on land. d. it enabled sailors to calculate local time.

d. it enabled sailors to calculate local time.

Explanation:

Chronometer is an accurate timepiece invented by John Harrison in the 18th century (1761). It is usually taken along by sailors during traveling or voyages.

The main function of the Chronometer is to deduce the actual longitude and at the same time measure the time of the known location regardless of the weather conditions or the motion.

Hence, in this case, the correct answer is "it enabled sailors to calculate local time."

the answer is d. tariffs were raised by america's trading partners after the smoot-hawley tariff act, decreasing exports, and declining job rates.

by creating a labor shortage that pushed the continent toward a market economy