Labor unions tried to get better working conditions for workers by

O promising to work longer hours.

O setting up an apprentice system.

negotiating with employers,

promising to train workers.

Option: Negotiating with employers.

Explanation:

Labour unions form by the workers to solve the problems of the factory workers. During the late 18th century the condition of factories workers became worse. They forced to work for long hours in low wages. The working condition was terrible. The labour unions tried to solve the problems the workers by fighting for better working conditions, reduction of working hours, and wages. Unions negotiated factory owners to solve the problem related to wages and working conditions. The unions also helped in maintaining a better connection between the employee and the worker.

an effect of the steamboat's popularity was that people began building canals in the united states and europe. this was done to find another way to transport goods across the country and in that time, transportation using the river was very slow and dangerous. it depended entirely on manpower and the current of the river. that all changed in the late 1700's when steamboats were introduced. they soon revolutionized travel and trade through the river and dominated the waterways. eventually, other means of transportation took over from the steamboats, but there was a time that they the united states to expand to the west.