Question

What did Francis Cabot Lowell and Samuel Slater have in common?
Their inventions allowed the U.S. economy to decrease dependence on slaves.
Their inventions made Transatlantic communication more efficient.
They imported technological advances from Great Britain.
They grew wealthy selling their technologies to European buyers.

Answer 1

the main thing that Francis Cabot Lowell and Samuel Slater had in common was that "They imported technological advances from Great Britain," since Slater brought the technology that would greatly help the Industrial Revolution. 

Answer 2

Cabot and Slater both imported technological advances from Great Britain.