I believe the answer is A
One of the main reasons why workers joined together to form unions in the late 1800s was that the Industrial Revolution had led to many workers being gravely exploited--both physically and financially--by their employers. Forming unions allowed for them to successfully negotiate better terms of employment.
D is the answer because all of the answers are correct
Answer:
Used kayaks and dog sleds for transport
Explanation:
B. Credit and debit cards are both options for paying for things