The degree to which Egyptians identify with each layer of Egypt's history in articulating a sense of collective identity can vary. Questions of identity came to fore in the 20th century as Egyptians sought to free themselves from British occupation, leading to the rise of ethno-territorial secular Egyptian nationalism (also known as "Pharaonism"). After Egyptians gained their independence from Great Britain, other forms of nationalism developed, including secular Arab nationalism as well as Islamism.