How did imperialism contribute towards germany angry with britain and france?

germany's rule extended to only a small part of africa, while the other two countries had already acquired several colonies each. as explained here:  

"imperialism is when a country takes over new lands or countries, and makes them subject to their rule. by 1900, the british empire extended over five continents, and france had control of large areas of amount of lands [ruled] by britain and france increased the rivalry with germany, had small areas of africa."

whole lotta ptsd going on

depends on the age of the teen, many believe by the age of 16 a person should know the strong difference between right and wrong along with the difference between risky and immediate death. swimming with sharks might be dangerous but swimming with sharks while bloody meat is attached to you is just insane. even more if you have no idea what you're doing. however, no matter the age, as long as the person is skilled enough and has the mental and physical capacity to control their actions doing whatever sport they put their mind to is all that matters.