Which of the following statements summarizes changes made by Mongol invasions?

The Mongols were only able to hold on to a small area of land.
Conquered peoples were required to convert to the Mongol religion. .
Trade flourished under Mongol rule.
Cities were built to hold shrines to the Mongols that still stand today.

Trade flourished under Mongol rule.

The statement that summarizes changes made by Mongol invasions is: "Trade flourished under Mongol rule."

To determine which statement summarizes changes made by Mongol invasions, let's analyze each statement:

1. "The Mongols were only able to hold on to a small area of land."
To verify this statement, you can consult historical records, books, articles, or scholarly sources that provide information on the extent of Mongol control. Additionally, maps of the Mongol Empire can give you a visual representation of the territories they conquered.

2. "Conquered peoples were required to convert to the Mongol religion."
To assess the accuracy of this statement, you need to study the religious practices of the Mongols and examine whether they imposed their beliefs upon the people they conquered. Analyzing primary sources, religious texts, or accounts from various regions affected by Mongol invasions can shed light on their religious policies.

3. "Trade flourished under Mongol rule."
To evaluate this statement, you can look for evidence of economic and trade development during the Mongol Empire. Historical records, trade routes, and economic data can help provide insights into the impact of Mongol rule on trade.

4. "Cities were built to hold shrines to the Mongols that still stand today."
To investigate this statement, one can examine whether cities were constructed specifically for Mongol shrines and evaluate whether any of these structures still exist. Architectural records, historical accounts, or travel writings could provide information about the construction of cities and surviving shrines.

After analyzing the statements, we can conclude that the statement "Trade flourished under Mongol rule" summarizes the changes made by Mongol invasions. This is supported by historical evidence that shows the Mongol Empire facilitated extensive trade networks, promoted cultural exchange, and fostered economic growth in the territories they controlled.