What causes exchange rates to change? A.
The World Bank sets the rates each day.
B.
The Chinese government sets worldwide exchange rates.
C.
The rates change when nations decide to use a bartering system.
D.
The rates change based on the supply of and demand for different currencies.

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.

oil! is what i am assuming

i believe it is the second one.   if correct plz mark brainliest.

i believe he should not do investment b