What observation did griffith make in his experiments with streptococcus pneumoniae?

The resurgence of the ku klux klan in the 1920s was the result of which of the following? the economic boom following world war i the teapot dome scandal the rise of nativism after world war i the end of the red scare

What change took place in the african slave trade in the 1500's?

As a result of the germanic tribes sacking rome