What limits do writing from American civilizations before Spanish contact on American civilizations pre-1600 have as historical sources?

It can be inferred that the dramatic increase in defense spending by germany was the result of. (a) attempts by great britain to take german colonies. ( b) fear of a two-front war against france and russia (c) the need to put down a communist rebellion (d) a competition with the allies to produce atomic weapons

What characteristics did the kiowa share with the other plains people? a) they migrated from the same places b) they were nomadic hunters c) they used the horse extensively d) they spoke the common language! and you

How did the grooms national product (gnp) of the united states change between 1940 and 1944