Someone pls help me I will make you brain

What development led the soviet union to establish the warsaw pact? the soviets gained control over satellite countries. west germany joined nato. the allied powers grew weaker. the berlin wall was erected between east and west germ

Who was william johnson? a. a revolutionary war veteran b. was the most prominent free black in mississippi c. a field slave d. inventor of the cotton gin

    which of the following was anecological  result of european exploration from 1400 to 1800?   a.  increased trade with east asia      b.  the spread of epidemic diseases      c.  expansion of english territory      d.  the spread of christianity