James Monroe was the US 5th president
Answer:The Characteristics of Modern Agriculture Enabled by Chemicals. The evolution of agriculture in the world's rich, developed countries has four defining eras: settled agriculture; blood, sweat and tears; mechanical; and chemical.
Explanation:
The West African city that became an economic center of trade due to regional commerce is Timbuktu.'
<h3>How did
Timbuktu become a regional center of commerce in West Africa?</h3>
Timbuktu's strategic location at the confluence of desert and water made it an ideal trading center. It was absorbed by the Mali empire in the late 13th or early 14th century. By the 14th century, it was a thriving trans-Saharan gold and salt commerce center, as well as a center of Islamic culture.
The city's proximity to the Niger River encouraged trade between West Africa and Morocco in North Africa. By the early 1300s, Timbuktu had become the nexus of a variety of east-west and north-south commerce routes, and it quickly became the Mali Empire's primary commercial metropolis (albeit not it's capital).
Learn mroe about Timbuktu:
brainly.com/question/1276832
#SPJ1
The correct answer is selective attention.
Molly can selectively choose what to focus her attention to and what to mute. In her case, she is listening only to what the teacher has to say and not pay attention to what her friends are talking about around her. She is able to do this because her selective attention has improved.
