Why is it difficult for historians to know the true number of indigenous peoples that died as a result of the arrival of European explorers

What was one cause of the decembrist revolt? a. the desire for a constitutional monarchy b. the need for workers’ reforms c. the creation of a new railway line d. the outcome of the crimean war

George works in a factory and is a member of the labor union. he thinks his wages are low for the work that he does, so he tells the union representative that his employer should increase his wages. the representative asks the other workers if they feel the same, and they all agree. the following week, the union representative met with the factory owner regarding an increase in wages, and the employer agred to it. what strategy did the union use to get the owner to agree to increase wages? a individual bargaining b. threaten to go on a strike c. collective bargaining d. threaten to quit their jobs e filing a petition to the government reset next ntum. all rights reserved.

Can someone me with this ! i only have 20 minutes to finish it. i will rate you the brainliest and 5 stars.. asap (98 points)