Final answer:
The 21st century is marked by the deepening of globalization through advancements in communication and transportation, the criticality of climate change, and a more inclusive global art scene as per Jentleson.
Step-by-step explanation:
The 21st century is characterized by several emerging aspects according to Jentleson. Globalization has become more pronounced with the advent of sophisticated communication, transportation, and supply chain integration connecting the world in an unprecedented way. The threat of climate change has become palpable, impacting global environments and influencing how we live and even create art. The global art scene has become more inclusive, with techniques, materials, and the stories of female artists and artists of color gaining wider acceptance and integration.