Complex sentence: It has seen masculine and feminine use consecutively; in the United States, it was almost exclusively a masculine name before 1935; in the later 1930s, it became a popular variant of the feminine name Abigail.
Split into simpler sentences: It has seen masculine and feminine use consecutively; in the United States. It was almost exclusively a masculine name before 1935; in the later 1930s, it became a popular variant of the feminine name Abigail.