How did computers function before microprocessors?

How does a comet change when it comes close to the sun

Who was the first french explorer in america ? a. jacques cartier b. giovanni da verrazano c. samuel de champlain d. pere jacques marquette e. louis jolliet

1)which is the following was characteristic of the british colonies but not the french or spanish religion a. presence of slavery b. religion conversion c. smuggling and piracy d. strict racial hierarchy 2)how did the columbia exchange affect europe? a diseases from the new world decimated the population of the european continent b new crops introduced to europe generated further interest in the new world c enslavement of american indians in europe changed cultural attitudes toward slavery d the items produced by american indians become objects of competition in europe