3. though the 15th amendment extended the right to vote to other citizens of the united states, what methods did some states use to restrict voting rights?

When poll taxes, literacy tests, "grandfather clauses," and "white primaries" did not stop blacks from registering and voting, intimidation often did the job. An African-American citizen attempting to exercise his right to vote would often be threatened with losing his job. So the poll tax, literary test, grandfather clause, the white primary, and intimidation/threats.

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one of these is the rhoticity common in most american accents, because in the 17th century, when english was brought to the americas, most english in england was also rhotic.

they required less loading and unloading

explanation:

the shipping container improved shipping because it cut down on unloading time by three weeks, eliminated wasted space, and allowed ships to carry.