Paul Revere engraved and printed out propaganda pieces about the Boston Massacre. This led to many people taking more anti-British stances from there on out. Before that, a lot fewer people were interested in pushing back against the Empire. But after the masses learned about what the army did in the massacre many more stood up and later a whole war for independence was fought.
c) The remains of plants and animals, now turned into fossils, have been discovered.
Explanation:
The discovery of remains of ancient plants and animals which has turned into fossils was an indicator to the archaeologists and paleontologists about the Baynunah formation in the area.