In the early 1800s, british engineer richard trevithick invented the first railway steam locomotive. by 1850, britain had more than 6,000 miles of railroad track. these two events are an example of which type of relationship?

Causation

Explanation:

A causal relation is one that represents two events, where the second event was caused by the first event. In the case of the text shown in the question, the miles of railroad track, were built because previously the first railway steam locomotive was created.

the answer is: the sesquicentennial of the american civil war is an occasion to consider the legacy of that great conflict. this legacy is our inheritance, and despite many indelible features, we continue to negotiate the resolution of that conflict. the civil war was fought over slavery, but not always on behalf of slaves

question is unclear.

i can't sorry.

post the full question so i can .