Answer:
The second one
Explanation:
Free markets are characterized by the unregulated exchange of goods and services
I assume you mean WWI as there were only two. In WWI Americans participated. Many of the able men went to war. While the women, children, and disabled stayed and helped with the war effort. Most of the effort back home was from the women.
Based on several research studies <u>body clock</u> governs peak periods for learning new and challenging academic material.
<h3>What is a body clock?</h3>
The <u>Body clock,</u> established on circadian rhythm, maintains the body processes to function based on a schedule.
Research has shown that the <u>Body clock</u> assists the body to regulates the timing of processes like eating, sleeping, and temperature.
Through body clock, it has been observed that most people perform best in the late morning to learn new and challenging academic material.
It is believed that during this period, humans working memory, alertness, and concentration steadily improved.
Hence, in this case, it is concluded that the correct answer is <u>Body Clock.</u>
Learn more about <u>Body Clock</u> here: brainly.com/question/4169296
Answer:
common trade regulations
free movement of capital and labor
free movement of goods
Explanation:
