When did people begin to notice that coastlines of continents fit together like puzzle pieces? when satellites began taking pictures of Earth from space
when Alfred Wegener proposed the idea of continental drift
when early explorers traveled from Europe and Asia to the Americas
when geologists first started examining the fossil record of South A

C. when early explorers travelled from Europe and Asia to the Americas

answer: the unlawful use of violence and intimidation, especially against civilians, in the pursuit of political aims.

explanation:

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.