Which of the following best explains the changes in cultural exchange that developed during the twentieth century? (1 point)

The start of the Industrial Revolution in the twentieth century allowed cultural exchange to happen more rapidly.
• Smartphone technology made global cultural exchange more possible than it had ever been.
The Columbian Exchange of the twentieth century brought civilization to people who had never had it.
• During the twentieth century, cultural exchange happened more frequently than it ever had in history.

The correct answer is: Smartphone technology made global cultural exchange more possible than it had ever been.

The best explanation for the changes in cultural exchange that developed during the twentieth century is the second option: Smartphone technology made global cultural exchange more possible than it had ever been.

To determine which of the given options best explains the changes in cultural exchange during the twentieth century, let's examine each option one by one.

Option 1: "The start of the Industrial Revolution in the twentieth century allowed cultural exchange to happen more rapidly."
The statement here is incorrect. The Industrial Revolution actually began in the late 18th century, not the twentieth century. Therefore, this option does not explain the changes in cultural exchange in the twentieth century.

Option 2: "Smartphone technology made global cultural exchange more possible than it had ever been."
This option suggests that the advent of smartphone technology played a significant role in increasing global cultural exchange during the twentieth century. This statement is accurate as smartphones have greatly facilitated communication and access to information across borders, allowing for more frequent and widespread cultural exchange. Therefore, this option provides a plausible explanation for the changes in cultural exchange during the twentieth century.

Option 3: "The Columbian Exchange of the twentieth century brought civilization to people who had never had it."
The Columbian Exchange mainly refers to the extensive exchange of plants, animals, and diseases between the New World (Americas) and the Old World (Europe, Africa, and Asia) that occurred after Christopher Columbus's voyage in 1492. This option is not relevant to the changes in cultural exchange during the twentieth century and does not provide an accurate explanation.

Option 4: "During the twentieth century, cultural exchange happened more frequently than it ever had in history."
This option suggests that cultural exchange in the twentieth century occurred more frequently than ever before. Although it is a general statement, it does not provide a specific explanation or reason for the changes in cultural exchange during this time. This option lacks the necessary details to support it as a strong explanation.

Based on the analysis, option 2, which suggests that smartphone technology made global cultural exchange more possible than ever before, is the best explanation among the given options.