What did traveling on streetcars mean for many young people? a) they had less contact with other people their own age b) they could get to know each other without supervision c) they spent less time in the city d) they had less money for leisure activities

They could get to know each other without adult supervision

Explanation:

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.