Read the following paragraph and underline the topic sentence.
J.Sterling Morton was considered the founder of Arbor Day for his contribution.During the years between1867-1882 Morton dropped out of politics in order to spend more time promoting agriculture in Nebraska.He supported better farming methods,conservation programs,and tree planting.In 1872,the Nebraska State Board of Agriculture adopted Morton's resolution to create Arbor Day,a day set aside to plant trees.Prizes were offered to counties and individuals for planting properly the largest number of trees on that day.It was estimated that more than one million trees were planted in Nebraska on the first Arbor Day. Today.all 50 states celebrate this holiday,although the dates may vary to match each local climate's best time to plant trees.
J.Sterling Morton was considered the founder of Arbor Day for his contribution.
