Answer:
Delaware and Pennsylvania.
Explanation:
Today, 49 states have bicameral legislatures, and one--Nebraska--is unicameral. This was not always the case, however. Most of the American colonies were governed by one-house legislatures, but this gradually shifted. By 1763, only two colonies (Delaware and Pennsylvania) continued to use unicameral legislatures.
Germany restricted its submarine warfare in response to international outage.
Jonas Salk<span> </span><span>was an American </span>medical researcher<span> and </span>virologist<span>. He discovered and developed one of the first successful </span>polio vaccines in the 1950's.
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