Pennsylvania State Symbols

What is the best interpretation of Pennsylvania state symbols?

• Pennsylvania has uniform physical geography with little regional variation.
• The Appalachian system lies entirely outside Pennsylvania.
• Physiographic provinces are political districts created by the state legislature.
• Pennsylvania government sources caution that there is no single firmly documented origin for the nickname ‘Keystone State.’

Which description of Pennsylvania state symbols is correct?

• Physiographic provinces are political districts created by the state legislature.
• All Pennsylvania rivers drain through the same watershed.
• Lake Erie has no effect on northwestern Pennsylvania’s weather.
• The Keystone State nickname came to reflect Pennsylvania’s political, economic, geographic, and social importance.