Answer: The growing political tension between the US and Germany
Explanation: Germany started to take drastic measures and one was that a german submarine attacked merchan ships that had civiles on board
Answer: D) Islam is made up of many different ethnic groups.
Explanation:
Islam in Iran is made up of many different ethnic groups. There are two major divisions in Islam on Shiites and Sunnis. In Iran, the majority of the population belongs to Shiite Islam. Some of the ethnic groups in Iran are: Mazanderani, Azeri, Pashtuani, Turkmen, Kurds and many others. According to 2017 statistics, over 80 million people live in Iran.
