What traditional idea did Enlightenment thinkers challenge to improve the lives and freedoms of ordinary people? government,
medicine,
religion,
or science

The Enlightenment thinkers challenge the traditional idea of religion in order to improve the lives and freedom of ordinary people.

The Enlightenment Era marked the introduction of new ideas, rational thinking and philosophies in Europe.

Before this era, the church believers major thinking is based on traditional sources of knowledge such as from Church and superstition.

The Enlightenment era allows the uses of rational thinking as support for the existence of God.

Therefore, the religion traditional idea, most especially Christianity, did the  Enlightenment thinkers seeks to challenge in order to improve the lives and freedoms of ordinary people.

Explanation:

I got it from Username: TunDexi please give him some credit.

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.