Brian's mom was watching him play basketball and noticed, for the first time, that he has significant hair in his armpits now. she knows this means brian is:

This means that Brian is starting puberty.  Puberty usually starts between ages 12-16 for boys. Armpit hair, along with body odor and mild acne are a result of DHEA hormone production. This ordinary body process during teenage years that is related to puberty  is called adrenarche.

b) trade is easy because of the direct line between their major ports. bilateral trade reached 89,6 thousand million.

abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.