True or false alexander graham bell sent the first radio waves across the atlantic.

Which of the following led to a continuation of the treatment in the excerpt above? a)the brutality of the trans-atlantic african slave trade. b)spanish repression after violent native uprisings in new spain during the 16th century. c)european competition to quickly establish colonial holdings in the new world. d)the reliance of the spanish on native americans to provide labor under the encomienda system.

How did the results of wwi benefit the u. s.?

Which of the following is/are a major technological advances of the mayan civilization? a. the calendar c. math b. architecture d. all of the above