What did Anna Comnena and her family think of the European crusaders who arrived in Constantinople? Why? What were some of Anna's observations about the people she saw crowding the streets of her city?

the name of the theory is landmass theory.

a plantation economy is an economy based on agricultural mass production, usually of a few commodity crops grown on large farms called plantations. plantation economies rely on the export of cash crops as a source of income.

i hope this : )

the constitution gives congress the power to regulate commerce "among" the several states.

but equal

explanation:

plessy v. ferguson (1896) is an important us supreme court decision that kept racial segregation based on "separate but equal". however, these racially segregated trains and places were not actually equal. plessy v. ferguson (1896) was finally overturned by brown v. board of education in 1954.